Got myself a set of I9 standard-flange hubs, but I have a question about the front hub. It's a thru-axle hub and it uses removable end caps that sit against the hub's bearings. I was measuring the hub today to determine spoke lengths when I noticed the two end caps are not identical. One is 15mm tall while the other is 17mm tall. Anybody know which cap goes on which side of the hub? My guess is that the 15mm cap goes on the disc side, which would reduce the dish on the wheel. Anybody know for sure though? Thanks.