Bought the bike partially finished with a ryca bobber kit. PO already drilled out the idle mixture block off so I'm sure it's been adjusted. Just changed the plug (sorry for blurry pic my camera on the phone has cracks) I'm not sure if the carb is jetted that's the next step getting inside it and checking to see what jets are in there. Bike seems to drop and surge at about 1/4 turn on the throttle when cruising. Idles ok it's a little splotchy at times. Does seem as if she runs a little on the hot side which from what I've read would suggest a lean setup. It's a 96 stock engine ryca header and short funnel exhaust. Has a k&n cone filter that from the looks needs cleaning or replaced. Open up the throttle and the ass dyno says she's fine but it's just got an annoying miss at constant throttle about 1/4 to half turn. I'm still going through her and cleaning up half ass installs and get it done fast so I can ride work. Just installed the new cam chain tensioner from Verslagen1 and saved myself a headache.

Plus was a Denso iridium looks like IX24B and it's got a lot of dry carbon on the tip looks a little burnt for sure. Gap was out quite a bit too.
Any quick tips as to simple adjustments for troubleshooting this?

Thanks Dave that's on my list. I'm still in the process of figuring out how many modifications have been done by the PO. Seems like everything that had let's say a 3 step process one of them was done but not the other two. He apparently wanted to ride it more than work on it which were all at fault for in one way or another. I'm gonna crack the carb open this weekend and see how she looks and if any work has been done. If not I'm gonna hit up lancer for a jet kit and get her fixed right.