I recently acquired two '68 Super 12's (traded the 10XL and 8e, as I have a bigger area to mow, and these seem to fit the bill with the big deck) and have been having engine issues all over the place. The one blew up the second day I had it, and when I changed the heads on the engines (needed to to change over the tins) I broke off three of the head bolts. Anyone know a good way to get these out? They broke off in the threads. Thanks in advance. Here they are, as they sit right now (Been cleaning out my garage). The rougher of the two is being used as a parts tractor, but may eventually make a return. I also got a snowplow in usable condition.