Thx! I should have included in my post "This is as far and the best that I know about those"
I have mine since August this year. I'm struggling with its engine "puking" oil from the breathers. So last week, I converted a vertical oppy-twin 19.5HP B&S into an horizontal with the dressing of the 18HP it had. Took me 20hrs. Ran to perfection for 4hrs, than started to puke oil from breather #1 (piston/cylinder #1) to a rate like 1Tbsp/min, while the older engine was puking that same in 30mins from both breather.
So I guess it'll be "ring"time whenever I'm able.
One other thing I'd like to ask.....
Does anything like transmission/hydro "jam/stalling" has ever happen on yours. That can happen either cold and hot. When that happen, I have to slightly press on the pedal until I hear a single small "click" under the seat, then it is ok to go ahead/backward. Otherwise, if I do press hard, as "to go", it seems like h-ll is turning tight to explode and almost stall the engine (!?).
thx