It could happen to any engine builder who has hired help. Stuff happens and the "owner" only has so much control over wether an employee is having a bad day.
The smaller the shop the more likely it is the owner has better control over who or isn't having a bad day. Which is why, typically, I prefer to deal with smaller shops. But that carries a risk as well (less product out the door, less experience). No easy answer on who to select.
If I was going to spend big buck's on a motor I'd consider Gessford Machine, Keith, B2Motorsports or other guys who have a "local to Club Cobra" kind of feel. I rarely see anyone from Roush posting much around here (or ever?) or sponsoring events directly related to Club Cobra, maybe I'm wrong... But, I like to keep it in the family, better service, closer to home kind of feel (regardless of where they do business).
Rawk, so Comp Cams never saw an FE broken rocker shaft?
What? They just got off the boat yesterday?