TL;DR - The NMO mount on my Ham Antenna was just a little too deep, and the antenna would contact the roof when it was tightened down, leading to rust. I've fixed that with a bit of judicious grinding.A few seconds with the grinder, and I've reduced the threaded section by 1/8" or so. Problem solved!
A few seconds with the grinder, and I've reduced the threaded section by 1/8" or so. Problem solved!
