As far as I know Jason uses Comp and Bullet, depends on the grind and application. I am sure our issue was Comp not have a care. The last one I ordered was Predator 60MM LS firing deal.

And yes Jason does build some stout pieces for sure. But they also are reliable and durable. I have 300+ laps on the B1 and it is still alive and kicking with 1050+ hp.