I went to Corning today but didn't see any Ventures, Midnight or otherwise, but I did meet up with another Venturerider, Leo3wheel but he was in his truck...
Yup, all I noticed was a slight loss of power going uphill but nothing much. MPG dropped a little.
Sounds like time for new plugs and a good carb clean/sync...
Saw this video on another forum on the subject of waving and wanted to share...
http://www.hdforums.com/forum/harley-davidson-videos/881914-wave-relief.html
Back in '09 I had some problems with my '84 so she asked "Why don't you buy a new one?" Two days later we were riding a brand spanking new one! To this day she said she never saw me do anything faster than that...