Received three conical spacers with my frame, used one on the rear wheel. Rear wheel seems secure on the stand, but let's see when I eventually get on the road.
Did you guys have to file out more of the exit hole for the front brake cable on the fork? I'm using the LTWOO ER9 group; unsure if other brands use different hose diameters. *Edit*: eventually got it through with some filing and probably most importantly some lube.
Waiting on cable routing kit and brake bleed kit to really go any further. Didn't have the forethought to order those when I ordered the frame. You'll have to excuse this luddite cyclist having come from rim brakes and external cables.