That's what happened to every VW I have owned and driven.. (6 to be exact) A few times on a couple of them to be exact.. The mis matched, cracked and welded, red haired step child has been the most resilliant of them all.. Finally I have exhausted my supply of 11mm blocks, and sold off all but one of the 11mm heads... I'm movin on up to 12mm stuff now.. I can move on to breaking new things now!