512 CES,

I too use the dead-center hole locater like darryl123 mentioned. If the type mount you're using has the two holes for the nose gear to slip through, you're in luck. Just drill a 5/32 hole in a hard piece of wood (using a drill press to insure 90 deg), then slip a 5/32 wire through the two holes and into the hole just drill in the wood. This allows you to mount the engine mount straight upright so that you can now drill the beams (again with a drill press) where the hole locater drill started the holes.

Hope this helps you in some way, cause these mounts can be aggravating. [sm=angry.gif]