Good point Mark..I'm forever being told my engine is too lean as it doesn't smoke much even at full throttle and as my LSN is spot on I don't get much puff even pulling away after say 30 seconds idling (so long as the motor is at full temp of course)the nay-sayers usually shut up after I scream the MG66 past them..or disappear mumbling about how short my engine life will be..can't tell some people.funnily enough it's the same people who try to tell me I'm tuning wrong cause they don't understand the long needle carb.Apparently 11 minutes + a tank is a sure sign I'm running way lean too..ooooh excuse me for not needing to refuel every 6 minutes..boo hoo!