Originally Posted by mechanicalmoron

Ahh that makes sense - good reverse lights are totally worth it.

Bad advice, based on assumptions about a part I've never touched and general best-bad-practices:

I'd start out by lightly sanding the tip of the switch, degreasing it totally with brakeleen/carb cleaner, then I'd use shoe goo to build it up - if it's way too short, you could use a piece of plastic, but that gets more dangerous. Let it cure quite a while if you use a solvent based glue (like shoe goo), so the remaining solvent doesn't absorb gear oil and compromise the glue. (as long as it's not exposed to volatile solvents, it's pretty good with oils, and if it comes off it shouldn't hurt anything)

Of course, you'll have to do some measuring, to get it spaced right.