Funny - I am the 2nd owner of my 86 Vulcan 750. I owned the same yr\model bike in 1990, at 20 yrs old. I loved it, but let it go because I just had to have that Ninja, lol. Now, at 47yo, and wiser, I nailed the same year, same model, in EXCELLENT shape, for a lowball of $800. Couldn't believe he took my offer! He bought it brand new in 1986, I even got the original title with 1 mile on it, lol. Both tires are brand new Dunlops. Oh, and it only had 24,500 original miles on a 31 year old bike! 1st thing I did once home was put in a little fresh gas, and took a 6 mile ride. Went pretty good. Registered the next few days, and proceeded to Napa to change plugs, and buy oil and filter. Bike had freakin Champion plugs.....Put in the infamous NGK's it called for, right in NAPA's parking lot. Performance and starting difference was instant! Only other thing I have done is install new auto cam chain tensioners from TOC. Absolutely silent now, VS just a hair of slap before the change. I must say though, like my bike in 1990, it is a finicky ride. You have to learn how to start it, and when to use choke, etc. If I shut if off, run in store, and come right back out, I use choke, and it instantly fires up. No choke equals a backfire, lol. 10 mins or so, no choke needed. Same as other bike in 1990. However, I have noticed the idle issue. After riding 10 or 15 miles, my idle is up to 1300-1400 rpm at a stop light, but if I just let out the clutch a tiny bit, not even enough to move, the idle drops down to 1100-1150rpm and stays there, idling smoothly. I see Seafoam is next to godliness, but never used it. I will be buying a can and dumping in tank to clean er out. No rust inside tank whatsoever. I also notice if I am cruising, and pull in the clutch, while coasting the RPM's don't drop as fast as I feel like they should. Seems they should drop right away, as I am disengaging driveline from engine by engaging clutch. Just curious if anyone has that infamous "Light bulb lighting up in your head" thing, guessing or knowing the symptoms and what I should do. I drive it every day, and love it, but strive to continually improve what I can. Any input is appreciated, Ride safe and watch those other people on the road!