okay, tune the high speed needle valve first. Set it to maximum RPM and them back it off a few clicks untill the engine starts to slow down just a tiny bit. Then pinch the fuel line going to the carb to test it. Only pinch it for a slit second. Just put your thumb and forefinger on the line and pinch it rather quickly for about a half second. When you pinch the fuel line, the engine should revv up just a bit. When you let go of the fuel line, the engine should continue to run, just slightly rich still.

Now for the airbleed. Throttle down to a decent idle. I dunno- maybe 2200RPM or 2500RPM. Whatever feels nice, and won't make the plane creep down the runway when your sitting and idleing.

Let the plane idle for about 20 seconds. Then quickly advance the throttle to full. The engine should pick up and run smoothly at full throttle. If it starts coughing and sputtering before it revvs up, then your too RICH on the low end. If it dies before it gets fully revved up, then your too LEAN on the low end.

To adjust for a RICH engine, turn the screw OUT about 1/4 turn at a time. That allows more air to get sucked in, which in turn leans it out a bit.

To adjust for a lean engine, turn the screw IN about 1/4 turn at a time.

As far as the engine sucking air through the airbleed hole at full throttle-- thats not happening. When the throttle barrel is fully open, the airbleed hole is blocked off. The airbleed hole only gets exposed when your about 1/4 throttle and below.

Look down the barrel of the carb with a flashlight when its NOT running. Move the throttle slowly up to full and then down to idle. You can see when the airbleed hole bocomes opn and when the barrel slides past it and closes the hole.

Have fun.