EQ318B Magnum heads discontinued ?

so whats one to do? I have taken in like 8 sets of stock Magnums over the years and 6-1/2 sets of those have come back "junk/cracked" even though the ones I had taken off of known-running engines, had run fine. who knows how long theyd been running in cracked condition? Could you just cut the cracked metal out and install new seats to get rid of cracks? I have 2 of those 8 sets sitting at a machine shop right now, that I told them to toss in their scrap pile, if they are junk.... would cost me more to spend the gas to go after them and pick up than I could get for them as scrap.
Last time I checked you can still get EQ heads with Magnum intake bolt pattern so all is not lost, it was just the LA manifold bolt pattern that was discontinued for now.

I have a set here that were cracked across the intake and exhaust seat, we replaced the seats in both ports which overlap and in effect the issue is solved.