Huh, so I went to check the Basic.cfg file, and the changes I made with the tweak pack are there.
Alright, some quick backround before I go into everything: I was going to use wolfie's tweekpack to change the 1941 loadout on the Type IXB to mostly electric torpedoes. I was already in November, and when I switched from the VII to the IX it advanced the calender forward to mid-January, but when I reloaded the game the changes didn't show up. Now the weird thing is, yesterday when I loaded up my last save (The same one I had been loading to check the changes), the date was mid-December instead of January! *boggle*
Now after seeing the .cfg file with the changes, I'm going to load up SH3 again (I've set time in port to 4 weeks, and with the repairs from last patrol I should be well in to January 41) to see if things stick this time.
Just a quick note, I've got the TweekSub.exe and xref.ini files in the SH3 folder in My Documents, instead of the main game folder.