Mine all cracked at the outer bolt holes. The B&M flex plates have about 1/8" from outer bolt holes to edge of flex plate. The mopar performance flex plates have about 1/4" from outer bolt holes to the edge of flex plate. All of my cracked flex plates cracked from that outer bolt hole to the edge. The Mezeire flex plate has a little over 1/2" from outer bolt holes to edge of flex plate.

I have 3 different torque converters since 2004. All cracked flex plates have been since 2004 up to 2020. No cracked flex plates since going to Mezeire flex plates. Also had 3 different stock blocks, and a Bill Mitchell block for the last 6 years.