I'm looking at a nice 08 kx450 with 10 hours on it tomorrow and was wondering if there is anything to look out for? I'm 220lbs and a fast C or slow B rider in enduro and hairscrambles but really don't race anymore. I'll be using the bike mostly on 4 wheeler type trail and single track trail riding with friends majority of the time with a little brush busting mixed in. I was wondering if people make any gearing changes or add flywheel wieghts to make them better in the trees. Any input is appreciated.