I found an interesting thread discussing the differences of S8035 vs N0014:

http://www.rcuniverse.com/forum/m_160720/tm.htm

It would be interesting to find a similar discussion (or perhaps wind tunnel tests) on the difference between E168 and N0014. This latter looks to be very similar to the airfoil used in the GP CAP.

If the desire is to keep fuse planform (wing/stab positions) on the CAP, would it be preferable to use something like E168 or N0014 to prevent "snapping" tendencies at low speed?

Attached is a drawing comparing S8035 & N0014. For comparison, beside it are the E168 & E169 flat rear airfoils. Max thickness of the latter appears to occur at about 26% chord.

David.