I cut out the speed brake hard point. I used the Feinmaster for the first time. It works great, maybe too great since I cut through the bottom floor (arghhh!) I cut new LB23 and alum blocks. I had to use two 1/4" birch plywoods to make up the distance of what was cut out. I cut out holes and inserted alum blocks in the back plywood and then glued another alum block on that. So it has 1/2" thick alum to drill and tap. I also made the alum blocks 1"x1" to allow a bigger target for the drill.
