Not sure if Shadow was referring to taking off metal from a weldment or taking the wood down to fit. I would think wood. I did not grind any welds on those. If you do, the factory provided a small touch up paint container (small being about 1.5" tall). It is touch up for the powdercoat I believe

Another thing to do at this stage is put both the elevator and horizontal stab back to back, as if the bearings and bolts were installed. Make sure when you secure ribs on one that they will line up without interference on the other. Some of mine did not go exactly as pictured or dimensioned in the manual because to do so would have made them out of alignment between the two. Hopefully all that made sense.

Looks good!!