I finally got time to fly the airplane today. The mods seemed to give me a noticeable speed increase. Realizing this is somewhat subjective, the airplane was popping through the turns harder. We fly a 700' course and I was averaging between 9.5 and 10 second laps. Last time out it was closer to 11 second laps. At the end of 2 flights I looked at the plug and it had just a light gold tint and the element looked new so I think I can bump up the compression a touch more or throw some 20% nitro at it.