I have a 2015 Summit 154 800 ETEC. From a stand still if I punch it I can hit 8000 rpm. While at 3/4 throttle if I punch it I can only get 7600ish It doesn't sound like it wants to open up. I'm at 500 m elevation and on clicker 2. My buddy, who has the exact same sled is on clicker 1 and is hitting 7800-7900. Whats up?