....yep, I must say my .47 is running absolutly perfectly. The restricted
fuel inlet being the key. Of course, like in the case of the Tower engines,
the carb must seal against the o-ring....or the engine will always be
problematic, with the air leak.

The problem with the Tower .75 was mainly failing to shut off, even with
the carb completely closed. I bought one of the the very first Tower 75's.
When I installed the carb, it was so tight in the case it would not go all the
way in with hand pressure. I looked carefully after I pressed it down as far
as I could by hand, and I could see that the o-ring wasn't seated. I made
sure the cinch bolt was loose, then I put a small block of hardwood over
the top of the carb and gave it a sharp little rap. This seated the carb, and
I could see that the o-ring was squashed and sealing properly.

I never had the shut down problem because of the carb air leak.

Just like with any engine, the owner should go over all the bolts and screws
to insure their proper torque. Too many times, and inexperienced enthusiast
will install and begin running an engine without insuring it's proper assembly.

Loose headbolts have caused their fair share of deadsticks.

All in all, I would recommend the .47 GMS to anyone. I think I paid $65.00
for mine. It turns the 9-7 MAS prop at 16,000 even, and really hauls the
sport Quickie 500 plane.

FBD.