I was experimenting with the incidence of the upper wing and the best that works for me is -1 with respect to the lower wing. The stab is O with respect to the lower wing. I am using flying wires, they are functional because the stab is not covered with balsa sheet, but I assume that you can do it and avoid flying wires. There are easy to install and looks nice anyway (I am using it recently not in my pics) I am using 4 servos for ailerons. Also the upper wing is attached to the cabannes via 3 mm wire that cross trough the 2 holes were is supposed to be 2 screws. The forward end is bended in v shape so I use a rubber that attach to the other end. It is like the Carl Golberg Ultimate method. Easy to install at the field!.
The plane has unlimited performance with the Saito 180, but I noticed a "lack"of pull in middle to low range, but still fly very very good with this combo using menz 17 * 6 anyway, I am glad that I replaced it, the fuel economy has improved about 25% . The Perry is not needed, so I took it off.