ordered some skunk2 valvetrain, got the .5 oversized valves, tuner springs and retainers. First question is would the tuner springs work with pro1 cams or ctr cams with a 700 hp+ set up and second the valves I received had no s2 marking on the botom of the dish, the distributor shipped it together with the retainer box to save on shipping. I questioned the distributor about it said skunk2 older valve were not marked, can somebody confirm this or should I ship the valves back?