Hi Ron, I had the same problem with my
Boler. Not only did I have an issue when it rained but the inside had large washers which dripped water from condensation on cooler nights. I ended up taking the bracket off patched the holes and attached a spare tire mount to the back bumper. Easy choice for me because the
boler still needs to be painted.
This is an old pic where I had put the mount at the front but I did move it to the back bumper. Looks nicer.