Post clean-up picks for your delectation. Some pitting between 5 & 6.
I put a straight-edge on things - it looks to be ok but I've yet to get my hands on my dad's feeler gauges to be sure.
Replying to myself now. Had cylinder head skimmed and a new helicoil put in to fix the bodge job done on cylinder 6 by a previous owner (common apparently, because access to the plug for cylinder six is obscured by the bulkhead).
