Hey everybody, first post here. I got an Ender 3 S1 Pro for Prime Day this year, and it's been great, with a few failed prints and a lot of great successes so far. I'm mostly printing stands for my games and pens collection, cute models for the waifu, and parts for game console mods and electronics projects, so nothing huge or hardcore. Anyway, I had a few failed prints in a row, and now that I've got a long running, so-far-successful print, but I'm noticing an odd noise.

When the bed makes long fast runs forward or back, I get this sort of rattling, grinding sound. The bed moves fine, but the sound concerns me, and my wife said it was happening shortly before a recent failed print. I suspect one of two things:

1) hairs of 3D printed resin got stuck in a gear I can't see on the bed axis, or something similar

2) Some screws or bolts that hold something in place on the bed axis or something similar.

I'm not sure how to narrow down my options and figure out what's causing it, but I think whatever it is might improve my success rate on the stands I'm printing now ( https://www.thingiverse.com/thing:2940765 ), with a success rate of 1 success to about 5 failures.