I have a full STM rage 3 setup. Gold springs in both, 45 Helix, 2 shims, 40 gram arms, 11/2/0 weight set up. I ride mainly Ocotillo and hardback. On the street, from a rolling start, WOT, RPM's go to 7950, then drop to 7300 and start to climb again. I thought the RPM's were supposed to stay in one place at WOT? Don't these cars like it right around 7700? Maybe the belt is slipping? Thanks for your help.