So while running one of the missions, "target practice" i believe, JTACS gave me coordinates that seemed to be nowhere near the actual targets. After a bit of searching here I found others had had that same problem, and that at its core it was a difference between the UTM grid zone they were entering the coordinates in, and where the target really was.
In order to help others, I figured I'd use my mapping skills to offer a bit more legible map than the one on the DCS main site.
Right now it's only an 8.5 x 11 map, since it's really only for quick reference, but I can make larger versions if people are interested.
I'm also working on figuring out the exact best map projection for this area, and so will probably update it in the future.
let me know if there are any changes you would like to see dcsgridmap.pdf