It has tips on tweaking them to use them....just know that if a coroa style is good enough for CHarlie Papazian...AND he gets 87% efficiency, than it isn't the piece of junk you or others may think it is....
Should work fine, just a matter of ease and convenience. But, you definitely did overpay for it. I think they're around $20 online.
I just (cluelessly) bought a victoria mill on the advice of LHBS ($50).....I am heartened to see people coming in here and rescuing it from the negative, but I probably should have done my research before taking said advice......I'll be using it this coming week sI'm sure, and I'll report back!