@droftarts So, I'm issuing a correction to my original post.
After using the macro lens on my camera to take a picture of the IC I realized it was the correct part number! I switched from a "J" type to a "T" type in my config.g and it seems to be working now.
I was having an issue with an intermittent over/under voltage error but I crimped up another heater assembly and it seems to be stable. Whether or not it was a bad crimp or the actual T.C. I don't know.
I'm using Igus Chainflex shielded cable which is drained to an earth ground. There is about 5" of exposed, but twisted pair lead from where the shielding terminates to the daughterboard. Is this too much?