In all the years that I have been flying, I have never owned a 4 Stroke engine. When you fire one up before you fly, is it the same as a 2 Stroke? Do you tweak out the high speed needle valve and "Let-ER-EAT* or is there a little more to it. You always seem to get a few wrenches with a 4 Stroke, is there any PM to do on them? I never even thought to ask the guys at the field who fly them. I always chat with the 2 Stroke boys.