Just call him if you're not happy. I'm sure the intakes come oversized so you can adjust for head gasket thickness
The heads are o-ringed so no gasket. Tim has replied to my email and has told me to send the heads back. He also stated that the gap is for a gasket, which is obvious but I thought 1/4" was pretty excessive. I am in no way Bashing what so ever, just asking opinions of the product I received.