Some of the issues are due to the design. It won't be easy to get drop in gear that's much better. There's really no way to design a gear that has the lock-out braces and works with the offset design. I would recommend to century Jet to cheat a bit and have the gear rotate out further than the scale angle. Not vertical, but far enough to help out with the tuck-under issue caused by the angle. Darryl as Sierra says he will never make a drop-in replacement. It wouldn't hold due to design limitations.