Maxxforce 10 cylinder 4 imbalance max limited exceeded

Im having some issues with a 2011 maxxforce 10. it came for a died on road no start issue. Customer also stated it was extended cranking when hot. found all 6 pucks leaking so replaced all 6. Started having a code imbalance for cylinder 4 and 5 after that. after driving to purge air, cylinder 5 code went inactive cylinder 4 stayed active. So swapped injector 3 and 4 and code stayed on 4 so didnt think it was a bad injector. run a borescope down the hole and everything looked fine. checked everthing over again. hpop resevoir was full, found burnt pin on IPR and IPR pigtail replaced both, found bad o ring on high pressure oil feed line replaced that, new ICP, new injector harness, valve cover harness ohms out fine but thats all i could do for tests on it. Im not exactly sure where to turn next. Also found diesel in the oil from what im assuming was the bad IPR, changed oil and it cleared up for initial test drive but back to cylinder 4 imbalance and over fueling. Any ideas?

 

Did the relative compression test and was seeing as follows.
1: 26
2: 13
3: 14
4: 25
5: 13
6: 14

Checked all rockers valves and pushrods as well.