[Twin headlight Ernie]

I changed the trans grease in mine just a few weeks ago. There was a small 6mm hole fairly close to where the drain plug is. I put a probe through the hole and looked at where in hit on the engine using a flashlight from the side. I used a 1/8" drill bit in a cordless drill and drilled a small pilot hole in the area where I thought was right below the drain plug. It look a couple of tries. Once I found the right spot I drilled the pilot hole to 1/4" and hole sawed a 2 1/2" hole in the skidplate. I de-burred the hole when I was done. Now it will be there for future maintenance.