I did eventually find the plane on the World Models site. They say it is semi-symmetrical. Their planes always fly great when built according to the instructions. You may want to double check the CG and the position of the elevator with the trim centered. Moving the CG slightly forward isn't that risky of a thing to do and it may help your problem. It is also possible that you ended up with a plane with an incidence problem. It's not common but it is possible. I had a Sky Raider Mach-2 with a badly twisted wing half. So bad that I couldn't remove the twist by holding it straight and re-shrinking the covering. That plane did roll to the left really good though...