Front Wheel Axle Art.Nr. 158251

Hi

has any one else had problems fitting the Art.Nr. 158251 Front Wheel Axle to wheel hub, i have found the Axle splines are incorrect, and have not been cut deep or long enough to fit and original Hub.

http://www.sip-scootershop.com/EN/Products/158251/Axle+front+wheel+V50SSR90PVET3+PK50ISSSXL.aspx

any comments would be much appreciated, i have emailed SIP a few weeks ago but no reply.

regards

Nick