Well, as I was gathering things this weekend to get ready to do a carb cleanout and check my cylinders, I realized my busy schedule was too much to handle a project like this. So I went to my motorcycle shop to drop off the bike and explain the continuing issues (most recent was that the idol, all of a sudden, was really high and bike was overheating).
But as I got up Saturday morning to do this, the idol was still high - but my troubles seemed to go away. The bike was idoling on its own without clutch, it took off in 1st gear with both cylinders firing it seemed, no putts or jerks from stop lights. Only a temp issue it seemed after 15-minutes.
As I got to the mechanic, we adjusted the idol knob together and it was sounding nice on its own. Mechanic agreed and no need to take it apart to mess with anything (especially since it's intricate and would cost me 600 bucks or so for the mechanic to do it).
Rode it yesterday and it's doing great-better than it ever has. Now the temp gauge issue may be a bubble issue in the line that is sitting on the sensor and causing the bike to look like it's overheating (according to the mechanic)? He said shake the bike while it runs to move the bubble to the top of the system to see if that helps.
But other than that - the carb/imbalance issue seemed to work itself out from running it for about 1000 kilometers since I had the initial problems, and after two seafoam inserts. Coincidence? Normal? Maybe the mechanic was right when he said "just keep riding it" to get the carbs to burn out some of that gunk? So- I might say "fuel additives-YES!" at this point - I still feel like I should dedicate some time to take a peek myself - but it's running good now and don't want to disturb it! LOL Anyway, finally enjoying riding it again and I'll keep you posted on this subject as I go along. I've copied your posts/instructions for a future date of work and bought one of the 4-cycle synchronizers so I'm ready.
Thanks for all the help. Please post your thoughts to this latest development if you have any.
-Nic