Hey guys, Recently traded a 99 cr250 for a 04 450f and I have a question or two. first off my 450 runs great, but after kick starting a few other 450s, mine has compression and it'll hurt your foot kicking it all day long if I'm steadily turning the bike off and back on. I mean it will start right up first or second kick it just seems like it should have a bit more compression because I do not have to use the hot start decompression lever to get the bike started but kicking my buddies yz400f I could stand on the kickstart straight up and down and could not get it to move at all but he had a high compression piston in it. if I was planning to do some upgrading to get more power, what would be the best recommendations for that? I don't want to spend $1,500 tearin the head completely apart and back together and anything crazy I was just thinking of maybe replacing the piston and rings that are in the bike now with a high compression piston. any thoughts or recommendations? Also was the 2004 yz450f a strong year?