Hey LikedHare! I hate to revive this but I have an update!
I posted about this TAC issue on the bug report page and one of the mods over there had me do some more testing! It was discovered the TACANs are functioning perfectly with both dme AND radials with the A-10! So I don’t think it’s an issue with the base game! Tested at both KBIX and KMUO with channel 55 and 87 respectively! The radials still don’t seem to be showing in the C-17 correctly though!
Heres a link to the post!