Frayed new belts?

Just put on new be;ts all around and noticed after 1 week some spots are staring to fray already. Do you think they are to tight? Or weather is playing havoc on them?

Wow terrible…Thanks for help

I saw this too on my new build yesterday. Also curious how this will effect the machine. Thanks in advance!

Make sure the belts and pulleys are tracking right , the belt shouldn’t be touching the inside edge of the pulleys

My X and Y belts are dead center on the toothed pulleys and smooth idlers - still see some fraying.

My Z on the other hand is rubbing on the pulley. Checked the assembly instructions and everything was put together correctly. Is there any way to adjust this?

How are you making adjusting it to keep it straight? Mine does seem to wonder a little bit.