As I noted over on the other CL forum my ARC Vector with Magnum 36 came in at 49 oz ready to fly with dope over carbon veil on fuselage and Ultracote on flying surfaces. Flys very well, no "weight" problem at all. I wouldn't waste the time trying to sand off half an ounce of weight somewhere. Bunches of ARF/ARC Vectors are flying in NorCal now, threatening to make "Intermediate" the "Vector 40" class...and maybe Advanced as well!