Resleeve ... and work goes on ...
	
	
		following an initial +20 thou' bore, marks on the top of 3 sleeves (at about 2 o'clock facing forward I think from memory) could be seen extending about 7mm down from the top, from 7 to 10mm wide and about 40 thou' deep. After some discussion it appears the plastic head to block dowels have allowed the head to move sufficiently and slowly enough to allow the valves to pound these little dimples in the bore without self destructing. Very fascinating - I'd be interested to hear of other similar ... BRgds.