We run on a slightly banked 1/7 mile momentum track in a green plate winged kart with treaded tires (RR 36.5”) 52 on the duro (35.5” 45 duro on the lr). We are getting killed by .4-.6 tenths a lap and been all over the 15 driver gear chart. Last week we ran a 15-73 and turned 5800 and was way behind the leaders. Thought about trying a 14 driver this week. Anyone got ideas on where to start?