Think I ran mine with a 12X6 using an OS .52FS. Very nice plane. Finally had to retire mine before it could re-kit itself in midair. I treated it pretty rough.
Add a small piece of lite ply or similar to the bottom of the fuse at the tail where the screw goes in to hold on the horizontal stab. Add CA to where the screw bites in to the fuse above the horizontal stab.
This is a weak spot I found with mine and the stab kept coming loose till I did this. Also, tightening it up without the ply can crush the bottom of the fuse around the screw hole.