I allready did some small mods like cuting of the spark arrester and doing the airbox mod. Well, I live really close to see level, and my 70 allready came with a 62 jet and I am running it on the richest setting, (needle clip all the way up in carb, and the fuel mixing screw all the way in.) I read somewhere that you can buy 65 jet from honda, would this be overdoing it? Also, has anyone every tried to attach like a small home made turbo? Like a leaf blower? haha, what do you all think?