no smart ass my husband did not do the work he is a mechanic not a machinist altho it was one of his engines that got bored for $92
my husband supplied the new pistons and rings the machine shop supplied the expansion plugs. the machine shop is very reputable he builds lots of engines for our local dirt track racers
gaping the rings is not that hard just time consuming to stick them in the bore,measure,remove,file,repeat until you get the clearance you want
i guess it did not cost my husband as much for the machine work as it does you guys beings he does a lot of business with the machine shop and not just once every few years