Lithgow No1 Mk3 sticky extraction.

[muffett.2008]

Just some closeups of the areas that concern me.
Attachment 83311note the crack extending up the loading ramp, also the heat marked area. You can see the pitting in the chamber.
Attachment 83310note the rough face of the chamber, of the thousands of these I have done, I have never seen a seat this bad. Note the heat marks at the front.

Attachment 83309 This is what Pete was looking at, appears to have braze around areas of Bolthead, and heat discolouration. Also the bolthead gap, seen better in other pic's.

Really need better pic's. But I would be giving it a good going over.