well, I went back and studied the menu_1024_768.ini and dials.cfg files some more, and I've almost got all my tweaks re-tweaked to try to restore the rudder dial and add the draggable stopwatch.
However, I noted in studying the navimap mod that it appears to have the same map file in its part 2 as NYGM-TW does (4320_2160.raw), which probably explains why I had trouble adding the navimap mod over top of TW. Can anyone give me any insight as to what this particular file does (in either TW or navimap) and whether maybe I could get the draggable flag, speed chart and mine/net map capabilities of the navimap mod without needing to use/over-write this particular map file?
I'm off to test my other tweaks - hope it works this time
[edit] crap - that didn't work either - failed to load up, with a bunch of error messages - I think I've seen some posts about those error messages, so I guess I'll have to re-read these 11 pages of posts again

yep - sounds like my tweaked menu_1024_768.ini file is still screwed up

back to the drawing board again :hmm: