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By the way, what is reasoning behind your opposition to uniflow for a 4 stroke?
Because when I first started messing with 4 strokes I wasted a week running back and forth between my shop and the circle in my front yard trying to make a metal uniflow tank work as well as a simple clunk tank. I built 3 tanks including one chicken hopper, tried several plumbing configurations and never had one give me the consistency of a conventional vent clunk. At that point I said why bother, the clunk works.
With a little help, I developed a system for Saitos that I can share and explain to anyone, as long as they follow the guidelines it's plug-n-play to a power train that is able to compete with the best at the highest levels. My Saitos have won Intermediate PA, Advanced PA and Expert profile at Brodaks, I would say the only reason a Saito hasn't won Expert PA is because no one has ever ran one.
Have no reason to change anything or do further experimenting. Sometimes I get wrapped up in trying to explain the why's and wherefore's of my setup, not because I'm trying to sell it but because I'm trying to fully understand why it works.