diff --git a/smocore/deviceManager/deviceManager.cpp b/smocore/deviceManager/deviceManager.cpp
index fa4967a..4bf8e4b 100644
--- a/smocore/deviceManager/deviceManager.cpp
+++ b/smocore/deviceManager/deviceManager.cpp
@@ -170,26 +170,48 @@ public:
 };
 
 class DeviceManager::RemoveDeviceAttachmentSpecReq
-:	public PostedAsynchronousContinuation<removeDeviceAttachmentSpecReqCbFn>
+:	public SerializedAsynchronousContinuation<removeDeviceAttachmentSpecReqCbFn>
 {
 public:
 	RemoveDeviceAttachmentSpecReq(
-		const std::shared_ptr<DeviceAttachmentSpec> &s,
+		const DeviceAttachmentSpec &spec,
 		const std::shared_ptr<ComponentThread> &caller,
-		Callback<removeDeviceAttachmentSpecReqCbFn> cb)
-	:	PostedAsynchronousContinuation<removeDeviceAttachmentSpecReqCbFn>(
-			caller, cb),
-	spec(s)
+		Callback<removeDeviceAttachmentSpecReqCbFn> cb,
+		std::vector<std::reference_wrapper<Qutex>> requiredLocks)
+	:	SerializedAsynchronousContinuation<removeDeviceAttachmentSpecReqCbFn>(
+			caller, cb, requiredLocks),
+		spec(spec)
 	{}
 
+public:
+	DeviceAttachmentSpec spec;
+	std::shared_ptr<DeviceAttachmentSpec> specPtr;
+
 public:
 	void removeDeviceAttachmentSpecReq1_posted(
 		[[maybe_unused]] std::shared_ptr<RemoveDeviceAttachmentSpecReq> context
 		)
 	{
+		// Find the shared_ptr to the spec in the collection
+		for (const auto& existingSpec : DeviceManager::deviceAttachmentSpecs)
+		{
+			if (*existingSpec == spec)
+			{
+				specPtr = existingSpec;
+				break;
+			}
+		}
+
+		if (!specPtr)
+		{
+			// Spec not found, callback with failure and return
+			callOriginalCb(false, nullptr);
+			return;
+		}
+
 		// Call detachSenseDeviceReq first - only clean up metadata if this succeeds
 		DeviceManager::getInstance().detachSenseDeviceReq(
-			spec,
+			specPtr,
 			{context, std::bind(
 				&RemoveDeviceAttachmentSpecReq::removeDeviceAttachmentSpecReq2,
 				context.get(), context,
@@ -213,14 +235,14 @@ public:
 		try {
 			// Find the DeviceRole in attachedDeviceRoles
 			auto deviceRoleIt = std::find_if(
-				attachedDeviceRoles.begin(),
-				attachedDeviceRoles.end(),
-				[&spec = spec](const std::shared_ptr<DeviceRole> &role) {
-					return *role->deviceAttachmentSpec == *spec;
+				DeviceManager::attachedDeviceRoles.begin(),
+				DeviceManager::attachedDeviceRoles.end(),
+				[&specPtr = specPtr](const std::shared_ptr<DeviceRole> &role) {
+					return *role->deviceAttachmentSpec == *specPtr;
 				}
 			);
 
-			if (deviceRoleIt == attachedDeviceRoles.end())
+			if (deviceRoleIt == DeviceManager::attachedDeviceRoles.end())
 			{
 				// DeviceRole not found, callback with failure
 				callOriginalCb(false, deviceSpec);
@@ -231,7 +253,7 @@ public:
 			auto& device = deviceRole->parentDevice;
 
 			// Remove DeviceRole from DeviceManager's collection
-			attachedDeviceRoles.erase(deviceRoleIt);
+			DeviceManager::attachedDeviceRoles.erase(deviceRoleIt);
 
 			// Remove DeviceRole from Device's collection
 			auto deviceRoleIt2 = std::find(
@@ -245,14 +267,18 @@ public:
 
 			// Remove DeviceAttachmentSpec from deviceAttachmentSpecs collection
 			auto specIt = std::find_if(
-				deviceAttachmentSpecs.begin(),
-				deviceAttachmentSpecs.end(),
-				[&spec = spec](const std::shared_ptr<DeviceAttachmentSpec> &existingSpec) {
-					return *existingSpec == *spec;
-				});
-			if (specIt != deviceAttachmentSpecs.end())
+				DeviceManager::deviceAttachmentSpecs.begin(),
+				DeviceManager::deviceAttachmentSpecs.end(),
+				[&specPtr = specPtr](
+					const std::shared_ptr<DeviceAttachmentSpec> &existingSpec)
+				{
+					return *existingSpec == *specPtr;
+				}
+			);
+
+			if (specIt != DeviceManager::deviceAttachmentSpecs.end())
 			{
-				deviceAttachmentSpecs.erase(specIt);
+				DeviceManager::deviceAttachmentSpecs.erase(specIt);
 			}
 
 			// Callback with success
@@ -262,9 +288,6 @@ public:
 			callOriginalCb(false, deviceSpec);
 		}
 	}
-
-public:
-	std::shared_ptr<DeviceAttachmentSpec> spec;
 };
 
 void DeviceManager::newDeviceAttachmentSpecInd(
@@ -290,33 +313,19 @@ void DeviceManager::removeDeviceAttachmentSpecReq(
 	const DeviceAttachmentSpec &spec,
 	Callback<removeDeviceAttachmentSpecReqCbFn> callback)
 {
-	// Find the shared_ptr to the spec in the collection
-	std::shared_ptr<DeviceAttachmentSpec> specPtr = nullptr;
-	for (const auto& existingSpec : deviceAttachmentSpecs)
-	{
-		if (*existingSpec == spec)
-		{
-			specPtr = existingSpec;
-			break;
-		}
-	}
-
-	if (!specPtr)
-	{
-		// Spec not found, callback with failure
-		callback.callbackFn(false, nullptr);
-		return;
-	}
-
-	// Create async continuation
 	const auto& caller = ComponentThread::getSelf();
-	auto continuation = std::make_shared<RemoveDeviceAttachmentSpecReq>(
-		specPtr, caller, callback);
 
-	mrntt::mrntt.thread->getIoService().post(
+	auto request = std::make_shared<RemoveDeviceAttachmentSpecReq>(
+		spec, caller, callback,
+		LockSet<removeDeviceAttachmentSpecReqCbFn>::Set{
+			std::ref(DeviceManager::getInstance().qutex)
+		});
+
+	RemoveDeviceAttachmentSpecReq::LockerAndInvoker lockvoker(
+		*request, mrntt::mrntt.thread,
 		std::bind(
 			&RemoveDeviceAttachmentSpecReq::removeDeviceAttachmentSpecReq1_posted,
-			continuation.get(), continuation));
+			request.get(), request));
 }
 
 class DeviceManager::AttachSenseDeviceReq