U-Tanker fix: moddable?

[Tabris]

Hello my esteemed peers,

With so many of the H.sie / Stiebler mods and fixes customizable, I'm hoping the U-tanker mod is too. Of course, since neither the settings file nor the options selector have any modification options for it, I'm a bit pessimistic, but it's worth asking.

there are two changes I'm hoping to make:
1) Removing the restriction on Types II and XXI from resupplying
2) Changing the number of torpedoes and/or quantity of fuel provided

the reason is obvious enough, more customization is always a good thing! U-159 once took on ten torpedoes from UD-3, so there's absolutely historical precedent for making the number of weapons transferred more than four. On the other hand, sometimes you might want to code it so the tanker gives you no torpedoes.

Thanks in advance for any advice!
- Tabris