don't ignore them. My 4 post lift had started to make a funny popping sound occasionally when being lowered. I decided to check it today and found this...
When I started looking for replacement parts I noticed the assembly date on the serial number tag... 04/2001. So I've had this lift for 20 years, and I use it a LOT and my friends use it a LOT lol. Been a great unit, did replace the ram a year or two ago for a slight leak that couldn't be fixed locally, other than that it's been flawless. I checked all the pulleys then and either missed this one or it failed after.
Whew that's crazy. When I had a 2 post lift installed a couple years ago a friend who owns a repair shop said to check the anchor nuts often. I have on 2 occasions found more then 1 nut loose enough to twist with my fingers. Huge pucker factor. Nice catch!