Thanks, surfer, for that warning. However, I don't have that ringed, sport-flying, Tower .75 that you speak of. I have the high performance Tower .75 BB ABC CNC machined model that cost less than $100 (american) and comes with a 4 year warranty. You know, the one with the stock tuned muffler and remote needle valve with a top end of 17,000 rpm and 2.25 bhp. The one driscoll was asking about at the beginning of this thread. Cheers.