Sure hope it's fixed. You should go to the other post started on this subject. In short form my 07 Ultra started this same issue. I owned a custom bike shop, only because I've a very successful car facility and deal with the dealers ...I was like really. You don't diagnose you replace parts. Anyway mu bike has this issue..did the bulletin for the Iac reset...came back.....has a Zippers computer rules out factory BS and relearn BS a year ago or so it happened and replaced the IAC ...great fixed makes sense.....on a 250 mile trip back again. Did the cleaning relearn etc, fixed. Coming home 200 mile mark started again. Drove since it was all highway, got home and no issue and hasn't been an issue. So not sure how the screw can be backing out and readjusting. According to your fix (which for you I hope it is fixed) how ever it appears to be an interminttant issue...maybe even a bad run of IAC's. I believe a friend of mine mentioned there was an after market company making these instead of using a HD. I understand checking for intake leaks etc, but it appears we have all gone down that road.

I haven't driven the bike much and I'm taking my wife to Sturgis, her first time. I do not trust the bike at all. Hate to throw parts at it but I may just buy a new after market throttle body assy. Good luck guys I will look at the screws..but do not understand be loctited in that they would move all of a sudden.....think about it? This happend to a ton of 07 riders with mileage on their bike and it's not an ECM related issue

Email me with any thought...If I come up with something I'll repost