on my alcohol 'BLOWN" injected 383 BC i ran 38 nozzles and A 70 main..to me the .90 main could be a little lean..."maybe"..........I know my blower throws things out of kilter a little..
if i were you i woud invest in the clamp on style EGT moniters..very easy to install..frill a 1/4 hole in the primary drop in the probe and tighten down the band clamp...
if your running alcohol...your looking for no more then 1150/1200 degrees at full pass......this will save you much guess work..
as the man said above..call Jim AT ENDERLE Monday and he will get you dead on top of it..
brian
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "