gentlemancarrot

Good day, everyone. I purchased a used Ultimaker 2+, it seems to print great and accurate. Even with the stock settings the prints look fantastic. However, it is quite loud with an almost gridding noise. I have included a video link. It doesn't look like anything is rubbing and I lubricated the guide rods. The printer has just over 7000 hours on it and the belts have never been changed. I am new to 3D printing and only have experience on a much cheaper printer. Any advice would be appreciated. Thanks https://www.youtube.com/watch?v=oq7ADypgXlc