Rear fenders

[Mjr woodie460]

I am wondering how to attach my fenders to the rear of the chassis on the king. I made four fenders and brackets that mount to the axles. The fenders are attached to the brackets with two part apoxy so there is no mount screws showing on the outside of the fenders. This morning I was moving the truck on the table and one fender come off at the bracket . Is there any other way to attach them to the brackets or am I gonna have to make them all over again and mounts

Ps I would add pics but I am using my phone at the moment and can't put pics.