Robot motor/driving HELP!

[knightroto]

(will a moderator help me if the post is in the wrong section, i am a new member)

Hello, I am the wiring captain on team 2064. we are having some major problems with our robot driving. the robot goes forward fine, however it spins when you go backwards and it seems when you go backwards one of the motors weren't spinning. left/right is not working in an indescribable way. can you please help us think of what could be wrong? we've tried playing with the PWM but we're sure we have those correct, we also played with the inversions to no avail. we rechecked the program in and out and it still didn't work in addition that even in arcade drive similar problems occur with left/right.