Loose gear shift knob

Since I got this car, the gear shift knob has been loose.  Often, it would come off in my hand during gear shifts. I'm pretty sure that the knob was a light press-fit from the factory.

The fix: set screw.

I drilled a hole in the plastic knob for the set screw.

Created a resting location for tip of set screw.

Complete, with the set screw going through the knob and locking into the shaft.

After a few months of operation, I still have a secure shift knob!