My 76 has at least 1 burnt exhust valve. I am wonder what you guys think of having a local machine shop rebuild the head or do you think going with someone like Man A Fre who sells rebuilt heads for 350.00. THe bitch of MAF is shipping plus having to ship back my core. I live in a pretty small town so my machine shop sellection is pretty dam small. Dont know, kinda lean twards local shop but want opinions.