Re: the Dallaire Sportster: Once the warps were out of the wing, trimming was no problem. White dope (Aerogloss ) went over it with no problem.
I am attaching photos of my Big John O.M.T. also covered in red silk with white trim. I was partial to that color scheme for a while ( I had a lot of red
silk and white dope ). Powered with an Enya TV III, I flew it almost every weekend for 4 years. I sold it sans radio and engine when I got
back into freeflight.