There may be a temporary solution. If you raise the ROF of Western tanks to 14 this will raise the on board ROF of their main guns by 1. This will at least help. Going higher, (like into the 20s or more) have effects that could tip the balance of play too much.
Test it! I did!
Edit, This should only apply to Western tanks after the Russians have gun tube launched ATGM.
Edit, P.S. DRG ROF can be changed!