Just got back in from the garage. Swapped plugs and swapped leads. Same issue. Drained carb bowls and got gas out of each. Removed the carbs and checked inside. Float height seems to be ok. Nothing gummed up and moving freely. Swapped out the pilots and mains on the right hand side. Nothing clogged and replaced with 137.5 main and 45 pilot jet. Checked left side (bone dry side) and yup, pilot jet all clogged up. Flushed the carbs out, and replaced with new jets to match. Synced the carbs as close as I could get with my blind eyes and back on she went. Hooked everything back up, pull the choke, light her up and….nothing. Didn’t want to start up, just kept sputtering. Said “screw it” closed the choke, hit the button and she can right to life no hesitation. Idled right up. Let her run for a few and got hot headers on both sides now. Carbs definitely need to be synched, when I rev the bike it gets a ever so slight pop now and then, and when revving it doesn’t have a hanging idle, but when I release the throttle and the idle starts coming down it will rev back up for maybe half a second (after having already starting to rev down) then continue back down to idle. So definitely some fine tuning to do but at least It’s idling and running on both cylinders. Will do the fine tuning once the bike gets to a riding state. Thank you everybody for your insight!
I had a bit of weird idle like that, carbs were spot on… advance unit was a little less than par. Tightened up the springs just a smidge and all good.