P1325 Cam Timing Issue

[Porschahh]

I have a 996 that just had the engine gone thru and new IMS, cam tensioners etc. The engine was put back together using all of the Porsche cam positioners. After 20 miles or so a CEL came on. Checking it the code is P1325 (Camshaft adjustment Bank 1). After using a Durametric, the following data is obtained as the engine warms.

At startup
RMP 1137, both cam deviations are 0,
Actual Camshaft angle Bank 1 -13.70
Actual Camshaft Angle Bank 2 +0.11

Warmed
RPM 828, Both deviations 0
Actual Camshaft Angle Bank 1 -13.14
Actual Camshaft Angle Bank 2 +0.0

RPM 2076, both cam deviations are 0
Actual Camshaft Angle Bank 1 11.52
Actual Camshaft Angle Bank 2 24.08

RPM 2374, both deviations 0
Actual Camshaft Angle Bank 1 11.23
Actual Camshaft Angle Bank 2 24.5

Basded on the new tensioner pads and the deviation at zero that looks good. The engine was assembled in the proper sequence of locking a bank and then rotation the engine 360 degrees for the next bank. What We don't understand is the 13 degree difference between the camshaft angle between bank 1 and 2 given the cams were properly locked with the Porsche cam tool during assembly. My background is small block Chevy motors where cam timing is way simpler. This is a 5 chain motor. Can someone explain what happened and how to correct this?

[Dpmulvan]

Check your sensors I’m assuming they’re clean, might have a bad sensor. Hopefully an expert will chime in and have some useful info for you. How is the engine running ??