Hi Energy vs Pro Magnum HFT lifters

I have a Q in @ Comp to see what they say the RPM range is, the specs are aprox 250 @ 50 with 508 lift on the intake and 525 ex. i do have adj rockers. I want to say I set the preload @ 1 turn, So i'm in the ball park but that is something I will ck and document when i ck the springs.