... I’ll die grind on the heads like I’ve done in the past (remind me to stay away from the seats please) and put it together when the shop does what I ask, just a square deck at 9.58 and be back in business.
I pretty sure have spare valves you can use to protect your seats. I usually have a few used ones in my stash. Exhaust valve stems are usually worn so it best to replace them anyway. Sounds like you know how to measure them. Just let me know.