Today I picked up another piece of 1×1-1/4 aluminum bar and cut out a new block. I used the old block to drill the 1/4 inch holes and then after fitting I trimmed the bevel.
Welcome to my builders log for Sonex S/N 767. It won't be as big as a real 767 but if you scale the speed I bet it will be almost as fast
Dave's Sonex Builders Log 