Hi Tom,
Custom male characters in SexSim aren't as fully supported as female ones, so there's not a super whole lot of info about making them, nor can they be made within the Character Editor. They can be made via XML files, though, and I assume you've already got that far.
There are actually two separate UVW types for males in the game. The first type is what was used for a few of the early male characters, and then we remapped the UVs to make things easier moving forward.
I've just now gone in and created special UVW maps for you, which I've attached to this message. To make proper use of them, make sure that you choose a value of 4 or higher for the
<body>xx</body> tag within the character's XML file. Otherwise the character will use the old UVWs, which aren't included in this attached file.
Please let me know if you run into any troubles. It's been a while since I worked with the male characters and I assume it will work fine, but I could be missing something. Keep me updated if you would.
Enjoy!