1980 XJ650 Carb Tuning

Hello again gents!

A bit of an update since last I posted here. The bike ran awhile ago, not well, but ran. I received guidance from members here which helped make is somewhat rideable. It still acts odd during idle. I made sure the battery was completely charged before any of this. It's sluggish to turn over with the choke on and will not start at all. It will turn over and a thump can be heard from the pipes each revolution but it wont fire. Without choke it will stutter to life and quickly die without any input from the throttle. Once it is started it will roughly idle around 500-1000 rpm, if you blip the throttle above 2k the rpms skyrocket to 5-6k and hang for a few seconds before it comes back down to 2-3k rpm, it will not return to 1k unless it is stalling. At that point I'd turn the idle speed screw between the carbs a hair to the left or right but it wont find a stable spot to return. It stays at 2-3k rpm's or will slowly stall if set below. I tried to take it down the road to see if it went ok while moving. Once you're moving there aren't any flat spots and it pulls through the revs. Starting from a stop however you have to rev really high to avoid it sputtering and nearly dying. I tried the color tune thing, I may have done it wrong I am uncertain, the mixture screw in the carb didn't make a difference, the color was white/blue and would not change no matter how far I spun the screw in either direction. I've been tinkering with the bike for about a year but inexperience/fear of making it worse has prevented it from improving at idle. I've taken the carbs off an uncountable amount of times. Other than it running poorly, everything else on the bike works fine! I don't want to get rid of the bike, but I am about to simply take it somewhere and have someone else get it right for a nominal fee.