All,

After a run in with a six foot high dirt pile guarding one end of our runway (long story), both prongs of the engine mount snapped.

The other damage was minor.

However, the LHS didn't have the SIG engine mount. They suggested a Hanger 9 mount (which I bought). The problem is that the screw holes to go through the firewall are too narrow. The LT-40 firewall has an elongated hole pre-drilled to mount the SIG mounts. The Hangar 9 is a single piece (the SIG mount is two pieces). So, the holes in the H9 mount have to be either bath redrilled, or I could use existing hole and drill the other. This would leave the enginemount slightly off center.

It may be a week befire the SIG mounts arrive, so I was going to go ahead and use the Hanger 9 mount.

Should I?

If so, should I drill the new holes slightly above the existing elongated holes or beside (inside of ) them? Or should I use one set and have the motor mount slightly off center?

I want to maintain as much strength as possible, since my repeated hard landings have damaged the firewall (due to the nose gear wheel trying to punch through it).

GB