The engine mounts were fastened to the stringers with 3/8" x3" lag bolts, during rebuilding the holes are now filled with epoxy. Can I pilot drill and use lag bolts, or is the epoxy to brittle for that, or drill out about 1/2" and epoxy 3/8" studs into the stringers and use nuts to mount, or drill out over size about 1"and epoxy wood plugs in then pilot drill and use lag bolts again.
Any thoughts will be appreciated. Thank You.
Any thoughts will be appreciated. Thank You.