I'm trying to design and build an RC sailplane (probably a DLG, actually). Primary design criteria is to have a very high L/D. Is the AH 79-100B airfoil a good one to use? Wingspan is going to be a little over a meter, wing chord about 100mm. I've seen a few others recommended, but none of them seem to have as good of an L/D. Is there some caveat that I'm missing? The airfoil seems highly cambered compared to the others I've seen, and the Cm is a bit high. Thanks for the help!