Stuck choke plungers ('78 GS750)

[Guest]

Having an issue w/ stuck choke plungers. Carbs have been off the bike and going through a very slow rebuild process over the last 3 months (father of 2 toddlers!). Put 'em all back together a few weeks ago and mounted them to the bike to fire things up. Got it started but the fuel t's were leaking. Took the carbs back off, pulled them off the rack, and put the fuel t's in to some gas per suggestion to soften them back up to be able to seal. That worked great. But now I have another issue - all the choke plungers are stuck. The choke lever will barely budge them. I removed the lever to see if it was just one plunger, but it was all of them. I puled one out to see what I could see. Nothing jumped out at me. Seals were good, but I don't suspect that would be the issue anyway. I'm thinking maybe somehow it varnished up when I added the fuel to start it, then drained it, then let it sit for a few weeks? The issue appears to be w/ the metal to metal surface of the plunger to the carb. Any thoughts?

[chuck hahn]

Roll up a piece of a NEW green dish scrubbie and use carb cleaner to clean and polish the hole the barrel slides up and down in. And clean the plunger barrels paying special attention to the tips.