Well, here is a quick update...
Today I spend a lot of time modding my engine stand, adding a third 'arm'. I dont feel cofortable with a whole engine hanging only from the two arms. I have seen those mounting plates bend too much for my liking.(plus, the bottom stud that it would normally bolt onto has pulled it's thread again. I fixed it once already!

should I try and get hold of helicoil inserts, or does it not really matter *that* much on a motor that is supported at the back with an engine bar(like a Vanagon/Transporter)?
Anyway, using this tool:

I found the following deck height readings with a vernier caliper.
#1 = 1.26mm/0.049"
#2 = 1.5mm/0.059
#3 = 1.26mm/0.049"
#4 = 1.22mm/0.048"
What do you guys make of this? Is this considered 'in spec'?
Tomorrow I hope to get the readings off the valves and check for coil/valve spring bind.
Thanks for your input!