OK,
Just adding my 2 penneth here. I bought our Elvis Gen Six last November, didn't drive him before we went to collect him but I asked the dealer to fit the VAG lowered springs. Anyway, picked him up & sure enough like the first poster, on the 250 mile drive home the steering wheel was to the right & he drifted left if you let go of it.
So, into my local VAG dealer up here who tracked him up to factory spec, all within tolerances. Got him back, & exactly the same so went back in mid Jan. They did adjust the rear toe ever so slightly but again got him back & no difference.
So, 3rd visit to my local dealer who went to town, slackened stuff off, realigned etc etc, they drove him & you guessed it, exactly the same!! WTF :-( Back into the workshop, get a call that night & they have sussed the issue. It would appear when the dealer fitted the springs they had unknowingly fitted the revision without the 'A', now my T6 has front axle weight of 1610, whereas the springs fitted were rated at 1550 I believe.
Just collected him today & only done a short journey, but steering is much more precise, rides better, but more importantly steering wheel seems bang on & now only follows road camber, not just left as he did.
Wonder how many other vans have the wrong springs as changing these were the fix for me. I wouldn't have thought a lower rated spring could cause this, but believe me, it did :-(