RE: Engine runs on the flight stand?
shoot, i use my 40 pound flight box and 25 pound aux battery in front of the wing half the time. Other times I use a PVC contraption that looks like a football field goal post with the single upright at a 90 degree angle perpendicular to the cross bar staked in to the gound. No problem either way.
BTW, that's the 68" Carl Goldberg Extra kit in my avatar, and it's got a TT .90 in it. The "goalpost" holds it all day long at WOT.