So I followed instructions on the website and get almost identical measurements. Offset is difficult indeed! I get to 0.75mm
7mm across at nipple bed, then 1. 5mm head, 1.25 mm depth.
3.5 - 2. 75 = 0.75mm offset.
Would these be 2cross or 3 Cross?
0.75mm seems right, I'll update my post. 3 cross only.
571 erd according to spokecalc or DT gives 288/289 for front hub. You must have entered something like incorrect number of holes, try it again.
290/292 they suggest is close enough it would likely work with a short nipple, squorx, or with washers. But 16mm could be a problem.
For the front hub friction, there is a threaded ring on the non-disc side that sets preload. First undo the m3 screw locking it in place, then turn it
clockwise to loosen it. You may have to hold onto the axle, but be careful not to crush it and use the wide section that is the strongest. Turn it back counter-clockwise until its just lightly finger tight. There should be no side to side play.
Quite a bit of friction is expected since there are 5 rubber contact seals inside. So it may already be ok.
While you have it open, can put some grease to protect the bearings, mine was barely greased on just one side only.