Team Associated MT10 & SC10 R/C truck gear cover

The gear cover always falls off, then a pebble gets into the transmission, and requires me to take 1/2 the car apart to rebuild the stripped spur & pinion gears. The only way to replace this little part is to buy the entire $30 chassis kit.
The part on red table was print #1 on a new 3D printer. I trimmed it with a Dremel and then revised the CAD for a perfect fit with the 2nd print. It is much stronger than the original part. you just need a longer screw. I did provide a 2nd screw hole, but found I didn't need it... yet.

Designed using Onshape - - - Printed on AnkerMake M5C -

Print Video
https://i.imgur.com/AaDwpWy.mp4