I was fiddling with one of my '86s trying to get it to idle correctly and I noticed I backed the idle screw all the way out and it was still idling.
Air leak?
Was it the brass air screw or slide height adjustment.
How tight is your throttle cable? Could be its adjusted all the way and then some and is causing the slide to not drop all the way
How high is it reving.mine would run if I had it to lean.
Hard to say. Definitely above idle though
Try a fatter pilot or drop the clip on the needle to make it richer. If you have slide block height right and cant back down the idle with air screw your going to have to change the jetting or do a leak down test. Go to tech section and read Carl Bartletts jetting post if you do what he says you will get your jetting right.
How may turns in should the stock slide height be?
1/16 of a inch. Then you do everything with the pilot and air screw. Between 1 and 2 turns out on the air screw. I run 2 when its hot out and turn it in when it get cooler.