Modding Question: Heavy Tank Limit and Zoom Out (for AI games)

Making my own CoH2 tuning pack for comp stomp games, I've got the resource side figured out and working (can be adjusted under "army" category for those wondering, popcap and resource rate).

My next objectives are removing the the Heavy Tank Limit and increasing the Zoom Out Limit.

I managed to remove the limit for the American tank, but the same method (delete "required_not" in the "requirements" of the m26 ability) is not working for any of the other heavy tanks. There are other mods which do this for all heavy tanks, any idea how they managed it?

Also want to increase Zoom Out amount, I know it can be done through the map scar file but would rather roll it into this tuning pack. No idea where to start on this one, but there are also mods for it so it must be buried somewhere in Attribute Editor.

Thanks in advance for any help!