All right. I have a set of Jun III cams, and Jg valve springs. Has anyone ever done this. I ran CTR's on them and went to 10 grand a couple of times on a miss shift. No problems. The jun's have only .5 mm more lift. I really just want to go for it, but I think about dropping a valve, and I get scared. JG advertised the springs could handle 14 mm of lift. But that just seems like BS. Tell what you think, and why. These are the single springs, which require you removing the bottom buckets, due to install height.