What he said was "Run this dude: [
https://www.subsim.com/radioroom/dow...ile&id=4630]SH Validator from TDW[/url], choose the folder where your desired install to check is, and the applet will ask you if you want it to update your Windows Registry to point to that game install. Tell it "yes", and that will alter the Registry to not look in the original install folder, but rather at the modded TMO folder. If you did a completely "fresh" install initially, then you won't get that prompt.
As to the radar on the older boats, what we found in FotRSU was that the mast for the radar has to match the conn, and has to match the radar. Some of our radars were pointing at "normal" SJ, and had to be pointed at "Supported SJ", while one of the conns had to have its mount points moved for it to accept the mast...