I've only checked the incidence between the panels. There are recesses for the wing to plug into and they fit dead on. There's really no way to change it, but the whole thing is built on a jig. I really doubt it's the problem.

Here's the thing. I think it's still nose-heavy. I keep moving the CG back but it doesn't even slightly improve the behavior. It only happens when there's a little bit of up elevator and right aileron. I'm talking very little. Full movement on low rates is less than 3/4" and it happens when the stick is back about 1/4 of the total throw. And I'm using lots of expo so let's say 1/16" up elevator with some right aileron thrown in. It snaps hard to the right but it doesn't roll completely over. At most it goes into knife edge with the right wing down.

In any case, I have no confidence flying this thing down low. So far the wind has been such that my approach is all left turns where there's no problem. If the wind goes in the other direction then I'm making right turns low and slow which may be the end of it.

As far as changing incidence and decalage, it's all built in and unchangeable. It would be easier to build a new one from scratch.