Clean up pre-assembly

Me and Ken Spent last night cleaning the block and head and generally fiddling about making sure everything is spotless for re-assembly. Ready for timing up and bolting back together on wednesday night

 Head assembled - now using mildly uprated single springs capable of the 0.460" lift

 Crappy repro gasket has been fettled so it fits and doesn't impede gasflow. Valves cleaned up slightly on the back faces - in very good condition - no guide or stem wear. Seats excellent - this PI (218225) head uses Redline lead substitute as there was no sensible room for seats after flowing.