so i just got my 1976 CB550F back up and running. i did a quick carb clean, but not a total rebuild (so i'm sure that's gonna be your first suggestion) and a bench sync but haven't had time to do a full sync of the carbs. the problem i'm having is the idle is just racing at the moment. somewhere in the 4k range and i'm wondering if there is anything you could think of beyond just syncing or a full rebuild would do.
this bike has a GXR pipe on it and pod filters, but i had already tuned to carbs to that set up in the past, so that would hopefully be set. it's also got an electronic ignition i put in last year, so i didn't mess around with that yet either.