That sounds like a chain length issue. I cannot find the recommended method in the manual right now. But for a 1x, typically you want it as short as you can that doesn't overextend the cage in the low gear/biggest cog.  If it is too loose there, by the time it gets to the small cogs, the cage may not be able to take up enough and it will be slack.  The big cog fit will be painfully stretched for those used to a 2x setup.  A different system I have recommends sizing to the minimum length to go around the chainring and the biggest cassette cog NOT through the derailleur and then +4-5 links as the right length. Shockingly this seems to be right.

I used the biggie/chainlink +4 links now. I couldn't find any recommendations in the manual.
Maybe I should try removing another link.

Tideacebike

So after a lot of trial and error I ended up switching to a Shimano bb and it worked

Yeah, that’s the same I have. I’m missing 0,5-10mm for the safety pin to drop..

Nice build! Does anyone know if the fork needs an adapter to use 160mm rotor?

Does anyone know if there's a 3rd party headset that works with the frame?
My handlebars/stem are too wide/long.
I know they now have a separate bar/stem, but I would love to be able to use any stem/handlebar combo.

I could be interested in the seat post. Have you got a price for it, other than the mould price?

Thanks for the replies!
Fortunately today the tracking finally said “the shipment has been collected”, and in the manner of a couple of hours it says “left the country of origin”. So if I’m as lucky as with all the components I’ve received my frame by the end of next week. It’s a r099 tho, just hijacked this thread since it’s active

Have anyone has problems with shipping with velobuild? I got promised it should be shipped two weeks ago, then the end of the week came and nothing new. Sent Chris a message, he said they would send it after last weeks holiday. The holiday ended Wednesday last week, heard nothing by Friday, so yet again I sent him a message. He said it was already sent and provided me a shipping number. The tracking only says “the sender is preparing item for posting”. It’s been like that for almost a week, aaand again I ask Chris for an update, he said it has been sent, then I get an email from velobuild that the order has been sent. But the tracking update remains the same.

I’m doing a (almost) full Ali build, and didn’t expect the frame to be the last thing to be received.