Sounds like you need a new machinist. The ones (like that one) that have an ego think they're too cool to do it right.
I am 99.9% sure you have either two intake valves or two exhaust valves...they should be fairly different sizes. The intake and exhaust valves are two different part numbers. What's odd is the seats look the same size in your picture... That two thou is probably manufacturing tolerance. Are those OEM or aftermarket?
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