I easily give the 5 * due to Brittany for the outs...

I easily give the 5 * due to Brittany for the outstanding customer service she provided me during my marathon LB7 injector and CP3 injector fuel pump replacement for correct parts shipping/core refunds friendly though incredibly professional and knowledgeable of what I needed for my project.
Thank you!

I also thank Senior Tech Andre for localizing a symptom of a copper seat injection washer failed to seat/seal the injector from exhaust blow-by. This destroyed the injector tip and covered it and injector sleeve with carbonaceous matter.

I was able to limp my truck to get a balance flow rate which identified my #8 injector. I replaced all four even injectors again (those had about four miles on the set) I couldn t take a chance and have another fail

Truck runs great now

Thank you Andre and Brittany