Yes I have seen your plans before. They are a lot diffrent. I have the remains of one built from the Sterling kit. The plans you have have a more readley avalible leading edge meterial. Your plans use 3/16 sheet for the tail my plans use 1/8 sheet and that is what the kit had. The plans you have gave me the idea to extend the maple engine mounts farther back in to the fuselage. I built my bellcrank mount to extend accrost the center section not just one side. What got me thinking about this project. About 5 years ago I was out at an R/C feild and an older man was flying his R/C's and we got to talking about the old days. He said he had a Ringmaster in his camper that he had not flown and if I could help him he would like to try it.He had built like 30 years ago. So we set it up and he wanted to pull test it. I held the airplane and he pulled. He pulled way harder than I would have and the bellcrank mount failed. So of course we didn't get to fly it. When I built mine I felt that anothet 1/10 oz of plywood might be a good idea.