Gearbox remix version 2 (with bearings)

This is a 2nd remix of mijael08's awesome gearbox design. My first remix was a minor edit of a few components. This version goes a bit further, adding 1/8" ball bearings to the 2 main gear shafts for smoother rotation. Of course, steel ball bearings would need to be purchased, I’ve included a link below. I decided to share both versions available so everyone would have options.

Here's the link to the bearing I created for this remix. There's a total of 5 bearing in the 2 side panels and then a 6th one for gear C004:
https://www.thingiverse.com/thing:4534272

Here's the link to my version 1 remix which should be used as well:
https://www.thingiverse.com/thing:4505687

And here is a list of modifications in this remix:

1) C001-2 - base -
- widened the middle portion of the base
- lowered slightly the shaft for gear C004

2) C006-2 & C047-2 - side panels -
- added cutouts for bearings
- revised and enlarged window cutouts
- enlarged the openi