Crankcase (pcv) problems of the 2017 Chrysler Pacifica

One year ago (114k miles) I started having some rough idle, stumbling, etc. Then a cylinder 5 misfire code appeared. I swapped around coils and injectors, replaced the pcv valve, replaced lower intake manifold, coolant flush. Still no improvement. So I then replaced all the coils, plugs, and bench cleaned and tested all of the fuel injectors and reinstalled them with new o-rings. Misfire code kept returning. On veteran's day last year on our way back from a parade it would barely go over 35 mph with the cel flashing. I limped it straight to the dealership. For context, I have never run the vehicle hot and have kept up on regular maintenance intervals. I gave them a detailed list of everything I did to the vehicle. They had it in the shop and did a compression test. Compression was good on the cylinder head for 1, 3, and 5. However, a leak down test was performed and showed a significant leak in cylinder 5, prompting the need to replace that cylinder head. Luckily, we still had our extended warranty and this $10k job was completely covered. Fast forward to a month ago (126k miles) I was getting a noise from the accessory drive area. After looking closer, I had to replace the serpentine belt. In order to do that I had to remove the lower radiator hoses and drain the coolant. Got everything back together and started it up. The noise I previously heard was louder and more like a chatter. Then a cylinder 4 misfire code appeared. I tore it down, looked at the plugs and coils. All checked out. Did a compression test and compression in all 3 cylinders was good at #2: 155 psi, #4: 151 psi, #6: 153 psi. Ibwent ahead and replaced fuel injector for that cylinder. Vehicle has been running for a few weeks and is still registering misfires for cylinder 4. Everything is pointing towards a cylinder head replacement, which will cost upwards of $10k, just as the previous cylinder head replacement did. This is a far too common problem on these engines.