CamShaft Timing

[Muskoka Minute]

Afternoon Guys

So after fixing the AOS we got a knock in Bank 1.

I got a Durametric and help from Marcus it says
Porsche fault code 322 - Camshaft position with respect to crankshaft bank 1.

I pulled the 2 green plugs on the front of the car.
Set the crank to TDC - Intake and then Exhaust.

In both cases the notches on both cams in TDC are at the 1 & 7 o'clock position.
(While rotating the cam the notches on both cams do line up at one point prior to the crank getting to TDC.)
It seams like that what ever went wrong happened to both cams equally?

Could the solenoid do this or do we think its a bigger problem?

Do I need to run the car with the durametric attached to se how retarded? or can we determine that there is a problem and I need to proceed with repairs?
(I'm afraid to run it and cause damage)

I've read that a few things can cause this?

Can these repairs be done by an average guy or do I have to take to a shop?

I read some where that valve train repairs can be done while it's in the car?
(Is this true? Hope So)

Please chime in...

Cheers!
Bart

Here is the position of the top cam at TDC.