Head gasket voodoo

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Here is the set-up. 351W, Ford J302 alum heads, Felpro1011-2 gasket, ARP 170,000 bolt with ARP moly. Very careful assembly with proper torque sequence in 20lb. increments to 75ft.lbs as per ARP. Water leaks between block and gasket before start up right side only. I remove head and find water marks uniformly around each passage. Gasket shows NO! sign of compression anywhere. The blue silicone bead in the gasket looks new no head imprint anywhere. Have head and block checked and both are true which fits with headgasket looking new. Hand thread each bolt into block measure length-no prob. Reassemble and get the the same result. Increase torque to 85 [iron head spec] and seapage stops. Cross fingers and have an uneventful break in. Next morning retorque-loosen bolt 1/4 turn reset to 75. Some bolts are barely tight some loosen with a loud crack all take up an extra 1/4to1/2 turn just to get to 75. Other than someone stealing a lock of my hair making a doll what is the explanation? Now if I can just get a new pan from Milodon I may make it to Willow for the COCOA event