You'd better stop the presses. I went and checked the fuselage for my big Flamingo OT that uses the 501 airfoil. It seems it's carrying quite a bit of stab negative angle. Mind you I'd LIKE to move the balance back more as it's too stable and also I've got no way to measure and allow for the fairly generous down trim it carrys on the elevator without assembling the whole model and doing some careful measurements. But given what I'm seeing of the wing and tail mounting saddles I'd stick with the 1.5'ish negative on the stab compared to the wing unless you're planning on fudging the balance back as far as you can get away with.

Mind you if you can build in a ground adjustable stabilizer mount that will allow for some shimming you can get the best of all worlds. I'd still star with about 1.5 negative at the stab though.

The reason I don't move the balance back is because I already had to put a half lb of lead in the TAIL to get it back where it is now. And this is despite having a small .35 glow engine on the nose of an 84 inch span model. It must be the two and a half lengths of 1/8 music wire in the landing gear that's giving me the nose weight. In any event I just didn't want to add another quarter lb to the weight to move it back further like it probably should get.