I told him prior to buying a new machine that the bigger the bore, the longer it takes them to fully warm up.

Yes, my uncle is OK and his machine is good to go with a few cosmetic scrapes. Saftey is a must and today he admitted he needed to learn to ride better and smarter. I didn't want it to scare him out of the tremendous amount of fun these things can be climbing things, just wanted to stress to him the proper and safer way to do it. He is an old kid at heart and some times takes chances like he is 20 again, hopefully not anymore though.