Help with Valvesprings and valve float. Noob

Ok, first, what rockers are you running, and has anything been done to correct rocker geometry? It is possible you don't have enough spring, but throwing more spring at an unstable valvetrain is a waste of time. I've had more than 600 rpm increases during dyno testing, just from correcting geometry, on a soft spring. Make sure the geometry is correct, and then if it still needs more spring, swap them out.