In cruise flight my RV4 requires almost max forward trim to maintain level flight. it is not a weight and balance issue. I was thinking of changing the angle of incidence of the horizontal stab. when i looked at the mount for the front spar of the horizontal stab. it appears to have a piece of angle aluminium on the front and back of the spar bolting to the fuselage. The front piece of angle is riveted and bolted to the fuselage. I don't have the plans for this plane so i'm wondering if someone can help me out to determine weather it is supposed to be done like that or the builder of this plane decided to beef it up? if anyone has a set of plans handy so i could see how the stab is supposed to be mounted that would be awesome! it seems like the other RVs I've looked at only have one piece of angle mounting the horizontal stab to the fuselage but they arnt all 4's ive looked at.