My AA Sr was from an Easy Built Models kit... one of my first builds coming back to C/L after my first 15yr hiatus when I got married. Fun little planes and fly better than they should.
Eddy R has prolly built more AA Sr than anyone I ever heard of... and won with them... a lot. All Eddy's had a pretty good amount of paint missing from the underside of the outboard wingtip. He never had any trouble with them coming in on him on take off. (hint hint) The old joke at the time was to say to take the empty metal Ambroid tube when done building it and roll it up and glue it into the tip as your tipweight. Despite the intended design philosophy, the tip weight solved more issues than it caused, at least for the OTS pattern.
I followed similar trim advice, (Ok, I used a weight box) mine never came in at me either. I didn't rack up much hardware with mine, but it served its purpose and was fun to fly as a break from big PA ships and to just do something different. I think I flew mine on 56ft 15 lines, typical Fox at a good clip, prolly 4.9 laps, but it didn't feel fast, it was a pretty mono speed run for a fox, but I was running something like a 9x6 prop, which prolly pitched out to 9x5.5 or less in reality. I was even known to run an 8x8 on occasion with some go juice to kick up the vitamin N when I got bored. (yup, I've had a few fox cranks let go) Not going to do any pretty patterns that way but it got the blood pumping and was fun! The trick is to keep it light... just like the successful Ringmasters you see out there.
EricV