I midas well take the plunge and get me a 4 stroker huh? I guess I assumed that a first time 4 stroker would be a bit tricky to set up for a new comer to the world of glow power. I'll look into tachometers. Thanks,,,,Ok,,,one more question: when breaking in an engine,,,does one do it while it's sitting in the plane or is it done on a bench mount/stand? Sorry, just new to this.