For a while now Matilda has had a bit of an oil leak. She wasn't smoking but oil was getting out from somewhere. Also she has not been consistently up to power. A new head gasket was a possible solution.
Thanks to MickEssex, who popped over on Saturday afternoon, Matilda got her new head gasket.
Before the head was changed we ran a compression test:
155 145 145 170
Now she reads:
168 172 168 169