SUCCESS!!! I finally got the T-55 running with no issues! I installed the Pro board, fixed the Tamiya recoil issue by using a washer and remounting the trip arm closer and it now works perfect! What a kick in the ass that was. I appreciate all the help from you guys and especially Jerry for standing by his product. Hopefully the standard board he ships back to me will work as intended... It is going into my Enigma project which is just about done. I need to finish up the paint and get the electronics all sorted out..