I wonder if they just don't get their microwaves from the lowers bidder for that year (or few months) and the support boards were probably designed for the last batch of microwaves that came from a different bidder.
I put plumber's pipe strap over my microwave to secure it within its cabinet. (The same stuff you'd use to protect a water heater from earthquake damage.)
It works. We tow over very rough forest roads, and the micro has never moved an inch.
2012 Fun Finder X-139 "Boondock Style" (axle-flipped and extra insulation)
2013 Toyota Tacoma Off-Road (semi-beefy tires and components) Our trips -- pix and text About our trailer
"A journey of a thousand miles begins with a single list."
Easy fix I have done to 3 different rigs over the years that should have been done on installation. I screwed a 1/4” thick board on top of support boards with holes drilled thru in appropriate position and size for rubber feet on bottom of m/w to fit into. Then screw down a front to back board at each end of support boards and attach a poly strap side to side overtop the m/w and screw down to these boards.
Z-Peller wrote: Easy fix I have done to 3 different rigs over the years that should have been done on installation. I screwed a 1/4” thick board on top of support boards with holes drilled thru in appropriate position and size for rubber feet on bottom of m/w to fit into. Then screw down a front to back board at each end of support boards and attach a poly strap side to side overtop the m/w and screw down to these boards.
Nice. But first, you need to get the support boards UNDER the MW feet. That was my problem.
Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB