Patience is the key word

I did get 100% of my MH flights so far credited, with lots of patience and one mailed-in claim (which yielded results in about 2 weeks).

As FD is content with copies of the ticket and BP (unlike some other FFP's), I have no qualms about mailing them claims. My backup plan, which I haven't had to use so far, is to claim the miles with another MH partner if FD doesn't deliver after one claim.