I installed the metal gear box upgrade in my HL M26 Pershing and it no longer operated smoothly. There seems to be a delay in the signal or something. There is instant reponse for initial movement but it does not stop instantly. It keep moving an extra 1-2 feet. When I do more than one thing at a time (ie. turret motion with tank movement), it locks up. I wanted to know if damaged somthing on the board while installing the new gear box so I reinstalled the plastic gear box. Everything works fine, just as before. I don't know why the metal gear box would affect the signal that way.

Any ideas?