I just picked up a 3 wheeled 1620 rayco. I noticed in the book that it has pins to release the drive wheels to roll freely. They are broke and bent on mine. I've only used it once but it was impossible to steer, the back single wheel just skids. Are you guys disengaging one drive wheel to make it steer easier? If so, looks like I need to get a new rim with a working T handle release. Thanks