I could not find a solution to the tick mark scale but Schnorchel did the next best thing and adjusted the RAOFB rings so that the measurement will now yield the proper ranges.
Here's a link to that thread.
http://www.subsim.com/radioroom/show...88#post2253088
It works beautifully now so I'd recommend anyone with the same problem to use his mod. Here's what it looks like.