Quote: I take it you couldn't find a MOPAR specific engine builder in your area? Obviously this engine "builder" has zero experience with a Chrysler engine and should not be allowed to go near your engine again.
Cut your losses and find a builder familiar with Chrysler engines
Gus
A builder familiar with Chrysler engines will help but it's no guarantee. I had similar debris in a new motor after 37 passes. Cam bearings had wiped out, the new ones had been installed by a well known Mopar engine builder.