Hyperutectic VS Forged pistons

My KB243 are doing fine, its hard to find .040 over 340 piston that is forged..my builder had to talk me in to them and for $245 bucks they were my cheapest option

My 340 gets buzzed every time its out...done all sorts of hard driving, from flat out for too long, to 4 -5 grand for an hour on the freeways, not a peck of blue smoke from the exhaust ever

Just back off the timing, KB calls for 32 degrees all in and be sure the ring gaps are large