Hey guys, quick update on my build, which I hope might help who still need to start:
After managing the internal routing, I realised that I couldn't eliminate the headset play without locking the steering. After quite a few trials, I realised that the problem could be that the compression ring that sits above the top bearing, is sitting too low for the dust cover to compress it down once the top cap is tightened, which result in the dust cover pushing on the frame instead of the headset (as it has downward lip), while pulling up the fork excessively. As I put some cardboard/plastic strips on top of the compression ring as spacers (didn't have nothing better on hand), it seems fine, although some paint paid the price while figuring this out.
Obvs is not a solution but I intend to redo the wiring in a few weeks, once I remove the spacers and re-cut the fork, so i'll fix all that at once with some spacer-half-ring or something. Maybe a 1-2mm extra height in the top bearing could do, need to do some research on that. If anyone has ideas, fire away
Hope it helps if anyone has/will have the same issue