Bummer. Sometimes those things happen. In most cases I've read about, the "final solution" is to bite the bullet. In the old days, you had to buy a whole new head. These days, the friendly folks on the store on this website will most likely be glad to help you and just buy the one part or few parts to get you going again. With plastic it is hard to fix those kinds of cracks.fixing the leaking toilet...note the cracked flange because the PO over tightened the bolts...