Sorting out the Sport Scout heads

Just been in to see John at Moray Firth Precision Engineering in Inverness, he's just finished skimming and matching the 640 heads for the Sport Scout. When I stripped the top end off the motor at the tail end of last summer, I found that the heads were running at different compression ratios, and that the rear head was badly in need of a skim.
My pistons pop up above the cylinder beck by 0.087" .. John has matched the pop up in the head to 0.118" to allow some clearance, if more is needed I can sort that out between the base and cylinder head gaskets.