Hi there, first post! My battery cage for the drag has failed me and I cannot just bin it! My initial plan was to take the board out and put in another chassis (I still might do) but wanted to keep the original chassis, but replace the 18650 cage with a 21700 cage, squeeze it all in somehow. Is this possible? Would the drag body contain 2 21700 batteries and somehow fit the magnets in for the door?? Thanks, An0rak.