i will call you when i get back bruny im just heading out on the road.

this may be an issue with having to use such a thick head gasket (Metal)
and without skimming the block, due to your piston protusion issue on cylinder 4.

As i said to you ideally it needs the engine out and piston crown machined. But that wasnt going happen without going way over budget, its just a shame someone has bodged a rebuild on her at some point.

We will do what we can to help though mate, dont worry.