I do not want to be a party pooper or spoil your thread but your head doesn't seem to be ok and reworked to a normal standard.
The valves are too deep in the seats. The cause can be slightly too small valves or wrong grinded or most likely the seats are machined wrong. Both cases you have to replace the valves or seats. I think your machineshop should not have provided you your head in this state.
Having the valves this way will have less opening area so your engine will not deliver it's max power but that is the less worrying. The valves will after some relative short time not seal. Normally a valve sits on top of a seat and not in a seat. In your situation when there is little wear the valve does not seal properly anymore and will burn.
I even think it's impossible to adjust the valves this way. You will need very thin shims. I would check that first. No valve springs yet but only the top spring seat fitted with a shim and a bucket. Then fitting the camshaft and see if all is ok and adjustable.
I have to diagnose from your pics only ofcourse but it seems very seriously wrong.
This is your head.
From a different angle. It looks like the valves are flush and some even more than flush towards the inside.
This is an 1850 head of mine with valves flush after about 250.000km. When the valves are on this point they technically can't seal anymore and burn away as seen.
Same head another cilinder.
This is my latest head. Your can see the new valves are on top of the seats.
This is my volvo head with new exhaust valves that i replaced about 2 months ago. Clearly you can see the valves on top.
This is a sprint head from many years ago. Valves on top. These are used valves and reworked seats.
Reworking seats and valves is not rocketscience but a normal machining procedure for a machineshop and I think yours did a very bad job.
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