After having added Custom Waypoint Symbols to Base Camp Mac 4.8.11 - they do not scale up


Base Camp 4.8.11 with macOS Monterey 12.5

I downloaded a few custom waypoint symbols from POI Factory and installed them in

They appear in the Symbols list as expected, but they do not scale up to the size of the pre-installed symbols. They are about one-half the size.

The downloads have been either 24x24 or 32x32 in .bmp format.

Am I missing something or does Base Camp Mac not handle them nicely?