Hundreds, probably thousands, of earshaved Vulcans are shaking their heads.
My first thought was a dirty pilot jet/idle circuit, but I need to read more and I'm out of time right now, will check more later.
If a slide isn't lifting, it can easily be a cracked diaphragm or the dia. isn't seated properly at the top cover. Do the woosh test. - remove pod, lift slide to the top and release it, listen for a steady woosh sound and note there should be some resistance as the slide drops. If it snaps back down with gravity, or one side has a different sound, the diaphragms need checked, re-seated, or replaced. Don't mix slide needles, they're different on each carb.
I'm earshaved on stock exhaust with stock jets and slide settings.
Make sure the carb bowl vent is sheltered from wind. Wind on the vent will cause bogging. Where do you have your vent? Placement is critical.
edit: I now see this is an older thread and there was just a couple of posts to catch up on. gotta go...
Last edited by Spockster; 09-22-2017 at 02:02 PM.