Causes of B/C nozzle failure

I’ve been through 3 sets of nozzles in 200k miles. Two sets were cat reman and the third set is McBee reman, all the nozzle bodies have cat logo/numbers. Full injector pump/timing advance/AFRC/transfer pump overhaul 200k miles ago.
What other than the faulty reman process causes pencil nozzles to fail? It’s a 3zj51437 with 16.4 pistons per the serial number, cat/garret 75 turbo with 23psi boost, engine runs great very smooth until one day it will develop a miss, all three times I’ve put six nozzles in and that made it run smooth again. Does transfer pump pressure have an impact? My electric fuel pressure gauge will arrive Thursday so won’t know fuel pressure til then

 

Thanks for the info, are you on the “other” site too? Can’t get anywhere over there anymore lol. I just bought some McBee remans and ate the core in order to keep these cat remans I just took out. The local fuel shop says all six of these cat remans are junk so I took them back to kenworth to exchange them since I bought them in November. They’re sending them to altorfer in elmhurst for their own testing/warranty approval

 

Cat won’t test the nozzles without two hours labor paid up front, so I’m gonna take them back home and probably use them for cores on another set of remans. They are cat 0r4337’s and now they say my engine should have 0r8243 nozzles in it. The engine currently has McBee reman 0r4337 nozzles in it and it’s already acting up, missing and low on boost 3-4 pounds