You can use WinMerge to compare the mod file StarbaseModuleDefs.xml with the 1.6 version of the file and then merge the changes to your mod file making sure not to overwrite the actual modded code in the file. Best to find the modded changes first and encapsulate then with comments so you know to ignore those lines when using WinMerge. Best of luck.

In starbasemoduledefs.xml look for this block for each base starbase type

<Preclusions>
      <StarbaseModule>CultureRingModule</StarbaseModule>
      <StarbaseModule>EconomicRingModule</StarbaseModule>
      <StarbaseModule>MiningRingModule</StarbaseModule>
    </Preclusions>

and delete the miningringmodule preclusion from all of them, then delete all preclusions from miningringmodule. That will make every starbases able to be mining + 1 other type. To make it not type restricted at all, delete all the preclusions from every module.