I have a P1S since about a month ago.
I have noticed a scraping type sound on some movements of the toolhead lately. It sounds like something is scraping on the carbon rods or the x/y rods. I have already done a full maintenance as documented on the wiki, except for lubing the bearings for the pulleys. Lowering to silent mode reduces the sound a bit, but not much. It started happening recently, around 300 print hours in.
This video should allow hearing it. The model being printed in the video is this one: https://makerworld.com/models/602550