I had to remake one set of door hinges to get a better fit after installing door threshold U-channels so the paint does not chip when someone takes off the harness. If you have a bandsaw, the aluminum cuts easy after you've laid out the hinge and backing plate patterns. However... DO NOT cut through the steel pin with the bandsaw blade. Chuck it up in the vise and finish the cut with a hacksaw. Made the new set of hinges in <2 hrs. You can test this, but a 1/4" wood blade will cut aluminum if you go slow. Written up in Kitplanes some time back and I gave it a try.

BobRS
Alb, NM
SS7, 914 Turbo