-Remove the connectors from the harness block using a flat head micro screwdriver
- one at a time for this step...
-use a 22mm wrench to remove the switch.
-I then filled the switch from the bottom with cleaning agen
-actuate the switch a few dozen times against a paper towel and watch all the crap start coming out.
-test for continuity with the multimeter.
- repeat until the ohm meter reports 100% ok.

I used strike hold electronics/gun cleaning stuff for this. Use whatever agent you do at your own risk as it may eat the inside if your switch. Make sure you get it all out so you don't fubar your tcase oil.