Chainsaw Repair

Let me start by saying I hate HD- carbs.
Now, rebuilt this 3400 - carb, rings, lines, etc. deleted gasket and modded muffler. Starts well but loads up at WOT and commences with fluctuations in rpm at high rpm. also floods really easy.
Took the carb apart, soaked it again in solvent couple days, sprayed it liberally with brake cleaner, and adjusted the lever to couple hundredths below the recommended height.
Started it yesterday, revved it couple times and it still fluctuates. Shut it down. Tried to start it today. Naturally I engaged the choke. Big mistake. That thing flooded bad. Pulled the starter couple hundred times with throttle fully open. Sometimes it'll pop. I figure eventually it'll start. Ok fine
Question is - I have the L and H screws set at one full turn out. As per the shop manual. Wondering if, since gasket delete and muff mod, what the settings should be?
Did I mention I hate the walbro HD- carbs?
Thanks for any insight

Pretty sure about the gasket. Everything matches up.  Will take it down again to recheck. Aargh

New development. Gets curiouser. Rebuilt the carb again today. Tried to start it, no dice. Then put it on a known runner. Voila, started on first pull.
So now I have spark (plug out and grounded), fuel (wet plug), and air. I know the spark is not conclusive. Gonna swap coil with a known runner just for jollies.
Only other thing I can think of is I may have gapped the rings too wide. Had to file down a sxl set of rings.
This saw has never run consistently since the build. It's about to **** me off. Have no idea of compression but this thing has run with passion several times. Switch is good. As said, had good white spark today and it wouldn't start. Starting to see why this thing was laid aside before. Someone may get a good deal sometime