Hello, I'm seeking opinions...Brand new SainSmart x Creality3D Ender-3 3D Printer.

Hello,
I’m seeking opinions…Brand new SainSmart x Creality3D Ender-3 3D Printer. The bed of the printer does not glide consistently. There are two locations where the bed acts as if it hit a speed bump. I’ve visually inspected and can’t see anything obvious that would cause this. My concern is that during printing, this will cause a problem if the bed does not glide smoothly.

Your thoughts?

Thanks

Watch https://youtu.be/odDZMYr1di8 I think he had a couple bed and movements issues that he corrected
https://youtu.be/odDZMYr1di8

Thanks Kyle - a big help. SainSmart was extremely responsive and explained the rollers were too tight. So I loosened and it seemed to help.