Help! My engine is sideways!!

[Dllrd23]

Need a little help. Finally installed my 2.7l 5 chain in my 99 Boxster. Initial startup had 3-4 bad injectors. Finally got that sorted and started it yesterday. Big smoke on initial startup. Not unexpected. Let it idle for 3-5 minutes and noticed that bank 2 was producing all of the smoke. Vehicle ran fine above idle. It a little rough at idle. Lots of smoke from bank 2 (no muffler installed so I could compare). Shut down for about 10 minutes. Started back up. Longer it ran the more smoke. I believe it is either the valve stem seals or stuck oil control rings. AOS and all related piping is brand new. Less than 20 minutes of runtime on them. Pulled the hose off of the AOS and only residual oil present. Borescope showed no bore scoring. Not significant oil in the combustion chamber except for maybe 1 cyl that appeared to have only a few ml of oil. I would like to do the old seafoam trick and let the rings soak overnight. Problem is obvious, the seafoam will not sit in the rings due to the nature of the flat 6. Don’t want to do a full tear down to replace the rings. Suggestions welcome.

PS- pressure test was about 160 psi on all cylinders. Ran out of time to do a leak down test. May get to that on Monday. I’ll post results if I do. In the meantime, what say you??

Thanks in advance
-Ric