30 to 40 mm drops wont affect steering geometry at all , The suspension moves further than that when going over bumps /,
Its been proved by thousands of camper conversion owners that the drop in the rear ( normally about 25 to 30 mm ) causes the steering to go light because the rake angle which is 40 mm on a standard Van ( 50 mm on a T 32 ) is 10 to 15 mm after the conversion ,. , Its also a fact that when we put a camper on to the corner weight scales the increase in weight is all on the back axle this explains why the front wheel arch gap stays standard .
If Cali owners want to drive a van with compromised steering feel so that the floor is level when parked up , I guess they can . I have had many conversations with Cali owners who are convinced VW meant it to be like that , Whilst all the after marker suspension Gurus will argue this point it is at the end of the day personal choice .
VW messed up the Rear anti roll bar and it seems the rear springs as well and I think Calis are the worse handling vans made simply because they fit the wrong anti roll bar and rear spring to it .
If VW have now fitted a higher rear spring its a clear indication there is a problem
As Oli mentioned a KW height adjust kit is ideal and if you add a set of H and R Anti Roll Bars in to the mix you'll spend £300.00 less than a B14 Komfort kit and have a much better result all round .