Calm down Cyberwolf! I will always defend your absolute right to worship, believe, think, and run your engines as you please. If your models transition from +100 to -25 degrees during flight I commend your tuning ability.

There is an obvious solution to not getting smoke and oil on the walls of your shop while running them. DO IT OUTSIDE!. There are obvious health benefits to out door running as well. I am disappointed that did not occur to a man of your great intelligence and experience.
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BTW:
"WHATS THE BIGGEST CONTRIBUTING FACTOR FOR A DEMISE OF A GLOW ENGINE?"

Hard contact with the planet Earth.

jess