I ride 6000-10000 ft if I hammer it of the bottom it hesitates, stutters real bad for 3 to 5 seconds then comes alive. Then if I do long pulls it starts to heat up on high boost but not sure if its lean or burning raw fuel past the probes which has happpened to me before on other sleds. Its my brothers old sled and it never had this problem till he did the upgrades? Any # suggestions i can try, right now its set at 40 64 69.