Thank you Dave

I just ran the engine again and it hit me that I'd turned the regulator the wrong way TWICE. Turned it back 1 full turn and the engine now transitions pretty well and the high end came alive. I can hear the engine rattle a bit during the transition so I need to work on the low end needle just a bit. Idle seems to be very stable at 2400 rpm and it acts more and more like the YS engines I'm used to. Thanks for your time. Experience is what you get right after you needed it.

PS. I noticed that the throttle plate appears to go past vertical in the bore, Is this correct or should I set the high throttle setting to where this is perfectly 90 degrees?

Are you going to place the care and feeding of the 1.40/1.60DZ on your web site?