Yes I know but I was down to nill and tipped several valves. That valve was tipped.
Will be looking for a good used head if the future.
There's no need to source another head.
If you run out of clearance once you have tipped the valves by the manuals .0.30mm you can skim the collets, retainers and stems by a further 1mm to enable the use of the maximum shim sizes.
Once that option has been used or dismissed you can fit bigger valves which use the wider unused portion of the valve seat and pulls the stem height back into servicable range and after that you can fit shorter J style valves which have 1mm shorter stems to again regain clearance.
Lots of options before getting the seats replaced or fitting another head.