I had a cracked head replaced on my 1990 LT31 Westfalia. I did about 2000 miles in it and the new head is now also cracked. It hasn’t over heated or anything but mixes the oil with the water. I am confident with the people who did it and am now arguing the toss about who pays what. I am reluctant to buy the same head again. Does anyone have similar experience about heads to avoid / new heads that have proved reliable?