what does jim say have you talked to him ,
blue duece is running diferent pipes than you are and also at a different elevation and a different terrain he rides alot of desert so he wants a tall gear that pulls for a long time so the bike is not reved out.on the mx track it may be open and not very tight so the longer gear would work but for a short track or drag racing you run a lower gear revs out quick but for not very long..
Maybe the other guy was not telling you the whole story on his motor. what tires where you using and what was he using. how tall are youre rear tires 20 ,22,
blue duece may be running an 18 on the mx track wich would be the same as gearing the front down.. there are alot of options and endless combinations you just have to play around with it till you get it they way you want.