I realize all you smarter guys out there can get inverted glow engines to run well, BUT.... I've just found it enormously tedious and annoying to do that much tweaking, so much so that I just find a way to mount side or upright. While I concede that a glow engine can be tweaked to run well inverted, I would argue that the same engine with same effort will run BETTER upright. I fly several heavy warbirds, so I HATE dead-sticks!

mt