Carbonazza... Thank you.  I didn't even think to measure the hub.  I trusted that the wheel I bought was what it was said to be. Sure enough.. I measured.. And it was off.  Took a closer look and it's missing the end cap on the left side. 

Hey everyone... Im new here and also looking for some help with my rear thru axle.  Im pretty much done building my first  CCB... It's  cs-496,  a hardtail, with boost spacing.  I bought a dt Swiss boost wheelset with an xd freehub and sram eagle 10-50t cassette.  But when mounted, there is a gap along the axle on the non drive side(disc side) between the rotor and the left side dropout. Like the end cap doesn't protrude beyond the rotor much... I feel like there should be a spacer or different end cap or something there.  Looks like everything should be over to the left.  Does anyone have any idea of what the problem is?