My buddy, crew chief, shadow, whatever you want to call him, has MS. He can move his right arm, hand and leg, but has no feeling in them, he has driven my mower around and has 2 problems with it. Can't clutch it as my clutch is on right side, & has trouble releasing throttle. We have decided to build him a mower, and he is not planning to try to race it unless he gets along better than he thinks he will and I'm hoping this will happen. Since he gets along fine with my brake we are putting his clutch pedal on left side, with a hand brake lever on steering wheel for left hand. I am wondering has anybody ran an atv type thumb throttle on steering wheel? I think this would be the answer for him as he rides his atv all the time and even thogh we can't feel it this is more natural to him. Thanks for the imput.