I have done alot of work on this old '63 KH 500 and it seems to be running great now, except when I got to put it into reverse it throttles the motor all the way up, I have to just kill it. Could this be a problem from installing the lower end incorrectly (doesn't seem to likely because I get good Forward and Nuetral action) or is this a linkage problem right at the motor, I have messsed with throttle and shifter adjustments on the cable, and doesn't seem to affect it, Or is this a problem in my actual shift box.? Please help!<br />Thanks
