Wow 2.5 degrees negative,thats really BAD!I rechecked mine carefully and I am certain the lower wing saddle is the culprit just as youve indicated Doctorgo.Mine is 1 degree negative which is 3/16 gap at the trailing edge.My fix is to make two formers from 1\8 ply that are the shape of the existing formers.I will then split the difference(half of 3/16)raising the leading edge 3/32 and lowering the trailing edge 3 /32. I will then glue my new former to the existing former at the correct measurements.Then sand original former to meet new former at the front,and add balsa to take up space at the trailing edge.Fold covering back over and iron.Once I am done this I will deal with the interplane struts.Right now I need to get busy,Hope this helps anyone with this problem.I am positive there is some of these kits flying with improper incidence,Not my idea of what you should have to do with a brand new ARF,But the sooner I fix it the sooner Ill be Flying. Ill keep you posted
Terry