It’s difficult to nerf minrepair without gimping low level people who often struggle during levels 6-7 to scrap up enough   to get past the forums they need to beat to pay off the drrty cop. Despite having a DML myself I don’t necessarily agree that trolls should be able to make an enormous profit off of grinding faux news.
Here are some possible solutions

1) Declare a moratorium on grinding faux like Arktor suggests. Easy to implement but a pain in the bum to enforce.

2)Another solution would be limit the number of times that a character can run faux to 1 in a given day. That way they can still make up some ground but they can’t outpace the camwhores and emos by an insane amount.

3)Another solution would be to adjust the credit bonus faux recieves so that it still gives a slight bonus over praypal but that it’s not worth the huge amount it is currently. After all being able to grind praypal with no consumable costs is pretty nice, being able to grind faux for a profit is still pretty ridiculous.

4)The final suggestion is to redo the damaged item system (or possible faux itself) in some way that forces faux to be a more pyrrhic battle. That way people can still defeat it but people are unlikely to grind it for fun and profit.