Build the first Voron 2.4 about a year ago. Other than small adjustments have not done much maintenance on it. Decided it was time I show this printer some attention. Surprised at the amount of bolts that were "loose". Most tightened by at least 90 degrees, some more. Re tightened the belts and removed the hotend to lube the X-axis linear rail carriage. This is what I found. Replaced them with stainless steel bolts. (Just as well I got a box of 100 M3x50's Stainless Steel - got a lot of stealth burners to build )