Driver's Door Switch

Doesn't work reliably. I've sprayed contact cleaner down the shaft and actuated it dozens of times and it hasn't really helped. I checked on the price of this part and wow - $80 - $120! I would like my foot well lights to come on when I open the door but not at that cost.

The switch is riveted together. Has anyone successfully disassembled and reassembled one of these?

Thanks, Andy