Try HYSOL , a Loctite Product (E-120 HP) P.N. 29353, available from Grainger. It is an ultra-strong, non-sag,aerospace grade epoxy with 120 min. work life. It comes in a hardener/resin dual dispenser which requires a special gun applicator. The glue cost about $30, the applicator is an additional expense. I borrowed the applicator from a friend who told me that some of the IMAC guys use this stuff.

On my Brio, I removed the gear plate and the quarter moon-shaped ply braces . I very carefully ground off the old white adhesive inside of the fuse using my Dremel and also removed the old glue from the plywood braces.I reinforced the braces on both sides using carbon fiber and resin.
Vacuum the fuse inners, clean with rubbing alcohol and then run your beads of Hysol. Re-install the braces and gear plate .The repair should be near bullet proof.

I have since put on 125 Plus flights from a grass, bumpy field. No issues at all.

If you use other types of epoxy, even re-inforced with milled glass, you may not have the same level of strength.
Frank