Re: Stand ups without flat spots..
Instead of holding your board out at 80-90 degrees try holding it out at a 45 degree angle. you'll know when you're doing it right when you see 4 thane lines instead of just 2. When you leave only 2 thane lines it means your left and right wheels are lining up which means flatspots and ovalizations.... Your thane lines should only cross if you do a 180. If you watch in this video you can see he leaves 4 thane lines...
Rayne Demonseed Brickboard/ Indy215's , Plasmas O+
LBL Penguin / ,Paris 195's, 78a Dual Duros
Liam Morgans old Grease Hammer/ 44cal/, Sector 9 Butterballs
28" mini / Indy 169's / 78a Raceforms