So, with the help of TwoMany and RG I was able to fix my clutch issue, a 3mm valve shim on the push rod and new clutch discs resulted in a very functional clutch. However, this allowed me to finally get a little bit of riding in. This revealed a new problem, as it runs for a bit the idle begins to move from 1.5 all the way to 2-2.5k. This doesnt worry me too much, however after about 5 minutes of use it begins to incur a stumble, or pop at around 3-3.3k rpms as I throttle up. I've also noticed that at this point each cylinder (it happens intermittently to each) will produce a very dark smoke for a few seconds. Once this begins happening it becomes a challenge to ride because the throttle seems to miss in this rpm and the bike will die shortly afterwards, it is then very difficult to kick over and start again once it does. This is a freshly rebuilt motor, it only has 17 miles on it because of the various issues. Bored out to 680, new gaskets, valves lapped, fresh plugs, uni pods, and ya-mama exhaust. My carbs are set as such. 1 up on main, stock pilot, second second to highest (to raise) needle setting, and about 3/4 (+/- 1/8 turn on either side to match at idle)