Holley Street Avenger 570 Idling Problems

Yes, I ran the break-in additive that came with the new cam both times.
First cam was very noisy. Comp said that was normal because of the fast ramps of the cam. When the second rocker arm broke, they inspected the cam and lifters.and replaced them under warranty.
This time everything was normal sounding until I took it for a drive.
I'll just have to see what I find when I tear it down.