I didn't take any pics but here it is. Remove the sensor, #59 below, (need an offset wrench 7/8"), put a washer over it, put pipe thread sealant on the threads and reinstall. It's really easy to get to and plenty of engagement between the shaft and plunger after its shimmed out.
The washer is smaller in diameter than the anti-venom mod one. I bought a variety pack of copper oil plug washers at Advance for $4.
Randy - I had it out on the workbench testing the switch because my reverse lights were constantly on. The idea came to me as I found the switch to be good and I measured the distance the plunger had to the shaft inside the trans.
Btw - It turns out that my wire has a short somewhere inside the engine harness. After trying to find it for an hour I gave up and ran a new wire from the connector next to the battery to the trans.
It appears possible from the exploded diagram, but is this mod possible to do from the underside of the car with the trans and its surrounding components fully installed? Will it be pissing fluid when the sensor is pulled? Fighting with reverse sucks; thankfully I don't have to do it often.
It is absolutely possible without moving/removing anything. It's on the passenger side. I just raised that side of the car on jack stands and did it, no fluid will come out this way. There are bosses sticking out around the sensor so you can't use a standard wrench properly. You should use an offset wrench but I used a pair of needle nose vise grips to loosen and finger tightened then a regular box wrench to snug it since the sides luckily lined up after the washer was installed.