ORIGINAL: SJN
Its usualy not that large. I bet the previous owner sanded the gap larger, so the elevond did not bind.
Heres what I did on my kangaroo, and Eurosport.
I bought some Graupner Hinge tape, designed for high speed gliders. Its thicker than normal tape, and only stick on one half, and it curves slightly.
Perfect for this aplication, so nothing binds, and keeps the gap sealed.
Thanks guys.....yeah I thought it looked odd. Its going to look even worse with the hinge tape, but I guess I may have to do it. It looks like I have one of the older Fiberclassics versions and it is hinged on the bottom. Not sure if the compsosite-arf version is like that, but know the Eurosport is hinged on the top like it should be.