Internship and life have been taking up time, so not much spent working on the bike. Been riding it to work pretty much every day (not bold enough to ride in rain yet) and its running well, minus the idle and cold running. I think the issue is either in the choke mechanism (rail is bent, holding #1 open slightly?) or electrical (remember weak spark. New plugs bought to test). I'm thinking it's not the petcock failing to deliver fuel, since the same idle issues were present with the old pingel petcock. I decided to add some details to this post so that someone may be able to help me with troubleshooting ;D
Current Jetting:
37.5 pilot (stock according to Clymer) 120 main (+3 according to Clymer)
This is with the stock airbox, K&N drop-in filter, Vance & Hines exhaust. This is how I bought the bike (I have removed the washers under the needles which the PO put in)
Details about the cold running:
Bike hesitates on acceleration, sounds a bit off, sometimes it takes a couple good revs to 8-9k to clear up the running. After that it'll run well, except for some clutch slip. All of these issues go away after 10-15 minutes of riding or so. After that, I can pin the throttle and it'll pick up and go at any speed. There is a noticeable bump in acceleration when pinning it from a 3,000 rpm crawl. It doesn't hesitate, but it feels like it just sort of comes on the power way harder after a second. I believe this is because of the vacuum building in the carb, since I do not have pumps and they are CV carbs. Feel free to correct me if I'm wrong here.
Details about the dying on idle:
Bike idles well down to 2500 or so once warm. I believe that when I loosen the idle adjuster past that it is completely disengaging the throttle plate. At this point, (or any other point when cold that it feels like dying) it slowly putters out, tries to idle around 1000, then dies. At this 1000 rpm "idle" it sounds like only two cylinders are actually firing.