RE: synchronizing engines
beepee, that very thought crossed my mind. That could get us close to where we wanted to be. I'll talk to the builder of the plane.
P47, it didn't occur to us to change props to make RPM changes. It sounds like a possibility. We'll try it. These are just off-the-shelf three bladed props fitted to the engines in no particular order, so maybe switching props on the fastest running engine and the slowest running engine might possibly make a change. An easy thing to try.