Ender 3 bed level washer

I figured I need to try and at least have the wheels start from the same level when it's time to try and level my print bed, and after adding this to my printer,

https://www.thingiverse.com/thing:3117234

As someone else has pointed out, if you start printing ABS, or other High Temperature filaments, these washers will melt, and get soft, so one of the first prints you make should be a replacement in ABS, or the other High Temperature filament you are using.