well its deffo done damage.

Swapped the tappets from Number 4 with Number 1.

Number 4 still has 7 Bar of compression, but No 1 now has like 2 BAR, so the tappets are obviously seized open or something holding the valve open causing no compression, which means number 4 valves are pretty much certainly bent i would imagine

So head will be coming off tommorrow or over the weekend.