the comp. reading may have been off, because that is what a new banshee would read. i'd do a topend rebuild, pistons, rings, needlebearings, gaskets, etc. i'd also repack the silencers and put a new clutch in it. a slipping clutch, a worn top end, and misc. other things can really add up, it just takes a while to make a big difference. i'd also do the topend as perventetive maintnance, not just for the power gain.