Is the shop going to correct their mistake at no cost to you? They should at least ream the guides for the correct fit and give you a new gasket set, and if possible, compensate you for part, if not all of your labor time.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!