I have a 3W80, that runs fine, and idles ok on the ground, but when im coming in for a landing it take a long time for it to idle down. Someone said it might be rich on the low end...but i didnt feel like woring on it, it was A HOT day

Just the opposite, it's lean on the low end. Richen it up and see if it gets better.

Thanks Joe, i guess ill have to try it out this weekend

Call Gerhard at Aircraft International (732) 761-0997. I Have the 3w-80xi CS and had the EXACT same problem with it. He has a fix for it. It involves relocating one of the magnets in the hub. Its inexpensive and it fixed the problem. Tell him your problem and let him explain the fix.

Cheers

I experience the same problem with my A51 .adjusting the needles did not help .Hot engines create vacuum leaks because metal expands, do a smoke test . Have a smoker blow smoke through the pulse port with the piston closing the exhaust port & note were it comes out then fix the leak mine had a major leak from the front bearings. Good luck.