Just completed my first spark plug service on 06 Uly. Also sprayed carb cleaner on throttle plate area (pretty gunky, but operated well). Got the IDS tool to reset TPS, so I did that too. Then (unrelated) I serviced the forks, seals, o-rings, and fork oil. Just completed the test run, and it exceeded my expectations! It's back to the bike I fell in love with! feels real good to have it working so well. I utilized a lot of the knowledge from this forum, and viewed a couple of youtube videos (buyer beware!)
Lance at St. Paul HD came through with all the parts. I hope to be able to keep it running for another 10 years (~50k miles) before I give up riding.