Ok if i can come out iwth all c's or better in school, my parents are gonna give me $100 for a membership at zeeland mx. BUUUUUUUUUt, It's getting warm and i'd rather ride out side (i.e. outdoor track, trails). They said i could take the money too. Should i take the money since i don't really wanna ride indoors in the summer, and buy a Rad valve with it? How Good do they work on the bottom end? Any one put them on they're kx85 or 100?