RE: Estarter Build Help
I have a brushless motor in my E-starter now, but it started out with the 400 motor. The correct fit (at least for mine) was to use the upper hole for the motor stick. Some of the other motors require you to use the lower hole though, due to the design of the gearbox. The thing to do is to mock it up "dry" (no epoxy) and see which orientation fits better. If you've already glued yours in, you may be stuck. Unless you cut the motor stick flush with the firewall, and then get another motor stick to glue in to the top hole.
Yep, drill the props out. The shaft coming out of the gearbox is a bit larger in diameter than the prop holes, so you will have to drill them out. This is best done on a drill press so that the prop does not wobble.