brothers/lmc rear tank questions

[bautino95]

ok ive search and searched till my eyes are sore. i bought the brothers fuel tank relocation kit and starting to get around to the install now since im gonna do my bed wood now too. did a test fit and saw the issue about notching the cross channel for the bed wood. no big deal. the issue im having is there are these tabs on the fuel tank that keep it from sitting flat on the frame. what did others do? cut them off or leave them? the other issue i seeing is the fill pipe. im gomna try turning the tank to fill from the passanger side to see if it clears the cross brace better. thanks