I found out that Antisplat Aero had modified their Almost a 14 mod to include longer captures for the seat back adjuster. I wrote to them and they sent me a set of the new pieces for free. Very nice! I scuffed and painted the new parts. I removed the cross brace from the fuselage and drilled out the old captures with my rivet removal tool. Then I drilled the two additional holes using the captures as a drill guide. Deburred the holes, then used the squeezer to rivet the new pieces in place.