z drive hub and normal 48dp spurs

[zoomzoombang]

hi just got a z drive hub thinking I don't have to use the plastic drive/spur combo and found that the mounting holes do not line up to a normal spur (tried kawada and kimbrough no good.) Is this normal i.e. different standard or will I have to use Mardave's own one? I'm thinking just to file the spur holes a wee bit to fit if that's the case. Thanks.



EDIT: Found a brand in the shops that fit. Thanks for looking.