Advice needed
 

Have a 2002 s10 that we bought about a year ago, replaced head gaskets then all to spec, and all else, belts blah blah. It blew a head gasket again. Is this a "thing" ? Heads did not appear to be warped, looked good actually. truck had 82,000 miles one owner. Could use some input before we go at it again....

Thanks in advance.

You need to put them on a surface plate to check that.