The MFW-15 has never had a manual, and although that is quite ridiculous (and embarrassing to say the least), it's really not such a big deal. There are literally dozens of subs from different manufacturers with essentially the same inputs, outputs, and knobs as exist on the MFW. The setup process for all of these subs is essentially the same. Read a few manuals from other companies (or the UFW-10 manual, as suggested) and you'll know all you need to know about your MFW. Come to think of it, wouldn't it be REALLY easy for someone to just take this existing manual and turn it into an MFW manual? Actually, upon checking, I realized that the UFW is more complex than the MFW, what with EQ and all... There's really no excuse for the lack of a manual, if not just to shut us all up.
Feet? That's another long unresolved issue. Early models apparently shipped with spikes. Then some models shipped with threaded inserts, but no feet. Instead, hard rubber discs were included with wood screws that were to be screwed in through the machine screw-threaded inserts. Then, some rosewood models were shipped with what appeared to be 1" (or so) probably plastic feet. Then other models were shipped with no feet, no threaded inserts, but with stick-on "tabs" as described by some. Then, they just came with nothing at all, although I think that I noticed some small "pinholes" (probably starter or locater holes) for possible drilling for feet that they've apparently decided to forego.
All of this was covered in the threads that have been temoraraly removed... and can probably also be found on the company's (currently unopened) forums.