Well, I just switched from a B&B muffler with 2 exhaust tubes too a Slimeline Pitts smoke muffler tonight.

I'll tach it in a few days and post a few numbers from 10,408' elevation.

I don't dare fly the plane at this altitude. Too scared. No good runways either. There is a straight road about 3/4 mile long near the golf course, but powerlines right next too the road, so kinda dicey on the take-offs and landings.

Trainer and other planes with light wing loading are okay--but still too chicken to try it with the Extra.

The LT-40 with a TH .75 is plenty good power, but landings with 20 degrees flaps are purdy fast.[X(]

There's a field at about 8000' down in Silverthorne. I might try the Extra down there later in the summer, after I get used to the field and runway. I'm new too that club. Only flown there a couple times. I want to get used too it, before I fly the Extra there.

The runway is a bit short for my taste with the Extra. I think it's only about 400-450' of Kentucky Blue grass. Nice and manicured--thick grass, but I'm used to landing this bird on a 750' concrete runway at 6000' and using ALL of it.

It's gonna take alot of confidence and some knee pads to get the Extra off that grass runway and back down again.[:-]