I have an 03 636 and put an 06 front end on (forks and rotors) everything went together perfect but when I put the axle off my 03 in and torqued it down the wheel does not wanna roll do i need to use an 06 axle? any help would be awesome thanks!

 

i just did the same swap. you need to use the 03 04 spacers. i think the axels are the same.