I just take my hand drill and very carefully drill a #40 pilot hole on one side. Then put it in the jig and drill it through to the other side with the drill press. It's always worked for me.
RV-8 #81077 Super Slow Build
Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016