Tri-Stan,
Very nice job. Well written. Objective. Great stuff. I find this information particularly useful, especially since I have just acquired my first BME (a 102).

Man am I glad I took small gas engine repair shop back in high school (some 25 years ago).... I take that for granted some times.
IMHO, When it comes to giant scale two cycle engines, I do think one needs to have a good handle on the !QUOT!theory of operations!QUOT! of the two cycles.

As for Leigh's situation... that's a tough call.
I'm not sure I (or any of us) have all the facts. I think it seems reasonable for Leigh and Keith to get together and arrive at whatever business decision makes sense for them.