The set itself is great, I have it for years but the insert from thin plastic drives me crazy since the day one. It is hard to remove bits, and impossible to put them back. And they keep falling out.

I was afraid of doing my own insert but it was much easier than I thought! I just placed bits in angle, and then took a picture of the handle, imported as canvas to Fusion, draw a spline around one half and revolve as a cut operation - and that was it!