Tamiya Electric Drill

A while back, someone posted suggestions for upgrading Tamiya’s electric drill (the one that comes in kit form), including additional collets and bearings. Of course, now that I need that info, I can’t find it. Can someone point me to that post?

Update: The link posted by Tim (below) does not have the information that I recall. I would have replied to it, but the forum is not giving me that option.

Do you mean this one?

https://cs.finescale.com/fsm/tools_techniques_and_reference_materials/f/23/t/88584.aspx