Another CV Carb question

Experimenting with different pipes, and tried to readjust the idle mixture. The screw didn't change anything, even all the way seated. So I took the air cleaner off and fired it up to see where it was getting it's fuel from. Couldn't see anything at idle, but just off idle I could see fuel coming up through the main jet. Is there anything besides a high float level that could cause this? I set the float by the book (on my drill press table at the correct angle), so I think it should be ok. It's got a 45 pilot jet, 180 main & the '88 Sportster needle.
The bike runs good, but I think it could be better.
Any ideas before I start tearing into it, so I know what to look for?

Are you experiencing any coughing or HicCupping? Any slow idle downs when at a stop sign? You said that you think that it could be better? What is it that you want better? Are you jetting for power or fuel economy?

No coughing. Idle is fine. Acts kind of sluggish in the mid-range, like it's too rich, but the plugs look ok. I guess the answer I'm looking for is why doesn't the idle mixture screw change the idle, and why would I get fuel through the main jet at such low rpm sitting still?

After reading some earlier threads, it looks like I should blow out the idle & pilot passages and go from there. How can you tell if the enrichener isn't closing all the way?

is the oring packing in stalled correctly . in the air fuel mixture screw hole ? ifthe oring is not there you are not sealing the passage correctly . was the screw bottomed out to hard and noew the seat for the air fuel mixture screw damaged? also if the idle is not set correctly you will not see a change or hear a change in the air fuel mixture adjustment . is it set at 1000. rpm and if your going by the harley tach all of them are about 300 rpm off . i set a timing light up that has a rpm setting display on the rear cylinder #1. set it at 1250 adjust my air fuel ratio and watch for rpm change on the display set it for the high end and smooth idle and then readjust idle to 950 -1000 and im good . if the idle is set to low when adjusting air fuel its very hard to hear a change and if adjusting to get that potato sound out of a twin cam you will be very rich and doing damage to your motor , and make sure it is fully warmed up when adjusting air fuel idle mixture with a box fan in front of the motor . hope this helps

Checked the float level, blew out all the holes with carb cleaner & compressed air, and checked everything I could think of. I'm pretty sure the idle mixture screw o-ring was in there. Put it back together and checked for vacuum leaks. The mixture screw still has no effect on the idle, but it idles and runs just fine. When I first put the CV on, I had to adjust the idle mixture, so I know it worked then. The spark plugs are kinda tan colored, like it's just a tad rich. Maybe pilot jet's too big? I think I'll just ride it and see what happens. Thanks for the suggestions!

Idle fuel comes from the pilot jet and is metered by the A/F adjustor.

If there is no change when the A/F adjustor is bottomed out, that would indicate that the pilot jet is too big. You should notice a change with the A/F adjustor bottome out; the engine should stumble, maybe even die. However, a 45 pilot would not seem to big for a stock 80"; some run a 46 with no issues.

That said, I agree with baggerpaul that you should be looking elsewhere. That o-ring is real easy to lose when you take the A/F screw out and it can also get stuck in the port. To eliminate that as the issue, make sure the o-ring is in place; if not on the screw when you remove it, check the port to make sure the o-ring is not stuck in the port. Replace the adjustor screw as well. If that doesn't result in a change, check the enrichener to make sure it is closing all the way and seating in its port.