[old gh bug]

Hi i have just bought a set of 16" boxster wheels iam in the process of building up a floorpan with a 901 box and 944 brakes all round
the wheels are all 6"wide

while i was messing around i tried one wheel on the back hub to find that the wheel will not bolt up fully without the use of a spacer as i can not try this under the wing i was wondering if anyone else has come across this problem