Done.
Might check your local hardware store for a 5/16" fender washer. The hole is bigger than the 510, and a fender washer has a bigger outer diameter than a regular washer. Might even be able to go with 3/8, but I've not checked to see which is closer to the diameter of your topper. And while it might take some looking, you can probably find then in stainless and brass...
Hey David. I have a silver metal washer that fits perfectly but I was afraid to use a metal washer in case it slips and touchs the atty threads and goes boom. Am I worrying needlessly?
