Sprucedeuce

I acquired a Jack Stafford Super Minnow recently and I plan to build it for plain old sport flying. It has a foam core wing which is great, I love them I cut a lot of them myself on my own custom made Variac powered equipment. Here's the problem, The foam wing core that comes in the kit was designed for pylon racing in the late 60's early 70's and it has unusually thin outboard section with an undercamber at the tip, I mean really thin, the cores are approx. 1/8th inch at the ends. Downloading a three view drawing revealed that the full scale plane had a symmetrical airfoil of conventional thickness along the span. I am thinking that for sport flying I should cut a new core that mimics the full scale plane because this will never see a pylon race and I'm a little unsure about the special racing wing for just knocking around the club field, can anyone offer me advice on this subject, many thanks.