ORIGINAL: Nik.

hey Ive got an STS .21 T Dadders mod stage II, and it just wont transition. Top end is fine, idles fine, but will NOT transition. Used brand new OS p3, and p7's. 20% trinity platinum. Mixture seems to be fine, only runs 3-5 seconds when fuel line is pinched. when throttle is applied, seems to be MEGA rich, but any leaner it quits and temps shoot up. No air leaks. Whats up?