@rogeratunicycledotcom pointed out this issue some weeks ago but nobody cared and Florian didn’t consider to increase clearance on side opposite to disc …
Can we get a closer picture of your spokes? Non-disc side?
This was where Roger mentioned that they’re been no change to the NDS
But I don’t think that should have impacted things as the earlier pre-fixed hubs worked in a Mad4One frame.
I know @Hammer has it working.
I suspect it is likely something to do with the spokes / build unless the fixed hubs aren’t fixed and in fact worse in this area.
You may need to file your frame to have them clear like I did slight with my Flansberrium frame.
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Do some of you remember a similar issue with M4O frame and BrakeFast? 
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I do recall that. Odd it cropped up now when that frame seems to have worked before.
I bet it was the spokes used in this build. But let’s discuss in the other thread 
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The hub is wider than it used to be in previous generations. Whoever has a Flansberrium frame and wanted to fit a new generation Schlumpf had to file down the frame a little bit (at max .5mm deep). It’s not a huge issue on an aluminium frame. I will be machining a little space in futur frame for this to fit as I dont have much space to move the tube on the bearing holder.
If I was you, I would file the frame a little bit with a round file so you dont create sharp corners (weak points). Aluminium tubes are pretty thick, still, you want to file the least possible.
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I can’t quite figure out what 0.5 mm represents in relation to the thickness of the tube.
Can you tell us the thickness of your frame tubes?
The tubes on my frames are 2mm thick. This is what KH frames were as well (they might still be the same). Really it doesn"t need .5mm off, but I’d be confident filing that much on one of my frames if I had to.
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