I have a 1993 Mercury 135 that has a stalling problem when it is warmed up. When it is cold it starts and runs great; when I come off plane and idle for a while it runs fine. If I shut it off and restart it while it is warm it starts fine. As soon as I put it in gear it just stutters really bad and quits. It will start back up fine and repeat this for a few times then just run great. HELP!!! Without the tech riding in my boat they have been unable to duplicate the problem in their tank. Anyone have any suggestions?