Power Locks question

[jsbihn]

Has anyone else had issues with their rear power locks becoming weak or going bad?

It seems I hit the lock or unlock button and sometimes the actuator is able to move it to the desired position, and sometimes it doesnt.
So much so, that I have to reach in from the front and move the lock handle over. Then after that it is unlocked or locked

(and of course once I do that it seems to operate well for a little bit, but there is no telling when it will and wont operate properly)

Any ideas?