OK Pete, I just finished running the .90ts in, it settled in at the 40 minute mark. It's gotten easy to tell when they're all in, I nearly changed out the Saito SS plugs because the idle was so ragged, it turned out the idle needle was about 2 turns out, I cured that by adding the glow driver and chasing the idle downward while leaning the LS needle. Here's the skinny
PS, I had no instructions so I wasn't confused.
Saito .90 TS twin
Prop ==Bolly 13.5x6
Fuel===WildCat 2/4 10% with 18% full synthetic
Exhaust== crinkle pipes from Saito 1.00 twin. Yep, uneven firing pipes worked on an even firing twin.
Max rpm 9,633
Idle, a perfect 1,865, I actually could lower it to 1,600 but it got shaky as in, about to drop a cylinder. It was rock steady at 1,865.
In both pictures it is turning 2,600 even and nearly on fumes.