T750 DPF Issues

Hi all, newbie here, greetings from Canada

I normally find what I'm looking for without posting, but this one's got me stumped.

Background:

Machine is a 2014 T750 with a Tier 4 interim V3800 from Kubota. I bought the machine with 4800 hours on it from a Ritchie Bros. When the machine arrived it had a pretty good rod knock, so we tore the engine down and rebuilt completely. Cylinders were bored .020 over and all OE Kubota parts used.

With the engine reinstalled I'm getting issues...

T750 DPF Issues

T750 DPF Issues