I had similar problems, I just took my door apart to assess my problems. I took the entire door lock and assemble out, cleaned up, greased up some parts and now she is working great although my hands and arms are all torn up, from reaching around inside the door.

My experience is the same as above. I cleaned the lock assembly and lubed the pivot points and all is well be careful not to break the little return springs. The locks now work like new from either outside or inside. Just wish I could find the rubber cushions that came on the striker assembly. I took my time and my arms are not too bad for wear. Oh yeah I had the windows and regulators out.

I guess thats what i have to do this weekend is to tear down the door and clean and grease up them parts... and hopefully find a set of locks so i can atleast lock the doors..