With a 1000 and over 28" tires I don't think you should have gone below B2...C1 would have been better then B1 but the load to torque is wrong. I think you need to be on B2 with the 29s and now.. A2..maybe C2 at the most for 30s and snow driving. B3 IMO is pushing it..too far for the UF. I think I would leave the weights alone for now and if I didn't like the stall, go with a spring with a lighter low number but keep as close to the high number as possible.