Eachine Wizard X220 fpv camera cradle

This is my first attempt at designing my own parts. This part is to cradle the fpv camera to stop it moving on big impacts to the ground. Id say this is a beginners pilot part for sure, its only meant for low camera angles 0 degs to about 15 degs.

I wanted to design it with tight tolerances to stop it being effected by the same forces as the camera. But i found my first print i needed to drill out the holes with a 5mm drill bit. I know need to work out is it printer settings or a bad cad job