I found that the left elevator was binding a tad on full up deflection. The cause was a slight bow in the leading edge tube of the elevator. I noticed that the gap between the trailing edge of the stabilizer and leading edge of the elevator was narrower at the root end hinge vs the outboard hinge. Unfortunately, that inboard hinge was drilled making too narrow a gap. I repaired it by filling out the holes in the hinge on the front edge of the hole so the hinge could move back. Then I made two washers out of 4130 and drilled them to the bolt size. The elevator was placed with the corrrct gap and then these washers or doublers were welded in place. Worked well, no binding.