Bad boost chainline

Just fitted a new chainring, chain and cassette to my pace 529. The chainline looks far from ideal and in the top two gears it sound awful from chain and chainring meshing. Not sure why it’s so bad.

KMC x12 chain

Sram eagle chainring and gx mech

Garbaruk xd cassette

Thinking about it now, it was a bit noisy with the old full SRAM set up but not this bad. Perhaps the KMC chain is less optimal with a SRAM chainring? Or the chainline is so bad that no combination would make it run nicely.

I’ve ordered a non-boost chainring as it seems like the most obvious fix and there is plenty of clearance to play with. But it’s annoying since it should be optimised for boost.

See video for horrible rumbling sound.

Just wondering if I’m missing anything obvious that may be causing it or if it’s just a bad combination of parts and frame.

Bad chainline

Pretty sure Garbaruk recommend against the use of KMC chains

https://www.garbaruk.com/12-speed-xd.html?category=11

Ah thanks onzadog, I hadn’t spotted that. I’ll have to pick up a SRAM chain in that case. Hopefully it solves the chainring rumbling too.

I run 11 speed with KMC on garbaruk.cassette and it works. It might be making a contribution towards your noisy drive though.

Is the chainring offset correct? My Orange had a -3mm on but runs much better with a -6mm on.