Looking back in the thread you can strip layers out of the ABF gasket, simply drill the brass rivets out, remove a layer and re rivet back with std rivets. Use this set up on my race engine with 13.5:1 compression with no problem although I do use ARP head studs.
What thickness was the part you removed? Measured an old ABF compressed gasket at the firing rings, 1.6+-0.1mm with digi verniers and 83.2mm bore. 3 layers middle 1.1mm. manufacturer BGAutamotive who state 1.7mm thickness and 83.5mm bore. also some info from elring here.
Bump this thread up. Has anyone had any luck playing around with the gaskets? And seperating removing layers?