I have a couple questions about adjusting the needle valves on my holley. I had it rebuild 3 years ago and haven't had any problem until now. To start, I was flooding from the rear or secondaries. The needle valve had junk in it, cleaned it out and put it back in. Where should the gas level be at in the plastic sight windows? It seems I can't get them set just right. After messing around with them yesterday. I have the the secondaries just below the window and my primaries are flooding. It seems I make small adjustments and I'm over correcting.
Should I be cracking the screw on top and turning the nut 1/4 or 1/8 turn then tightening the screw?