[jb92563]

You have 2 cam shafts so you should have 2 readings.

Perhaps V1 of Durametric is very limited in its reporting abilities.

Even the Chinese Durametric knock offs for $20 are using version 5 and
they do read both cams.

I have read that up to -6 is within spec. Outside of that and it will need some attention.

Normally you want slow changes in that reading as rapid changes indicates an impending failure.

I dont recall what the fix is to bring the deviation closer to zero. Chain Ramps? Chain tensioner?

I hope some others can fill in the info gaps for you.

My own 2001 S is also slightly either side of -6 deviation on one bank and around -4.5 on the other.