I've used the toothed washers but to be honest, it hasn't made a difference. I think the subframe is fine.. for now.
The knock is a very slight tap on turning both ways. It's more annoying than anything.
Here's the 208 and 209 logs. All done with engine off (is this right?)
16:06:59 Group 208: Camshaft Adjustment Adaptation (Intake)
0 /min Engine Speed (G28)
123 Phase Position Intake Cam.
-5.0°KW Intake Cam. Offset
00100000 Intake Cam. Adaptation
16:06:59 Group 209: Camshaft Adjustment Adaptation (Exhaust)
0 /min Engine Speed (G28)
75 Phase Position Exhaust Cam.
-3.0°KW Exhaust Cam. Offset
00100000 Exhaust Cam. Adaptation
2006 will probably have the newer chains, but worth checking those measuring blocks anyway. Chains just wear out regardless! Hopefully yours will be in the 0 to +3KW range which is spot on.
What subframe kit does it have? The toothed washers from VAG is only a temporary solution. Proper collars are needed to take up the (huge) difference in the bolt to hole diameter.
I've never heard a top mount knock unless severely worn. The most common cause of front end knocking on these cars is either the steering rack or subframe movement. If it just a top mount, happy days, put a pair of TT ones on as they are beefier. If not....... get saving!