Yes, washers and epoxy might do it.
Thanks for the compliment on the bezel. I really like how it turned out as it not only looks good but it puts control of lots of things right where it is easy to find.
Here's another view, although I can say that the wiring has been cleaned up since that pic was taken. Anyway, the switches get used and you don't have to go looking for where I hid them.
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI