I am in the process of getting trick flow heads 23 dergee heads complete assembled. I going to install a comp xtreme 4x4 cam (.480") lift. Comp cams recommends that I buy thier valves springs and retainers? trick flows heads already come assembled with all of that. My question is, can I use the valve springs that come with the heads as long as when i order the heads I chose the right size valve springs to match my cam?