I'll take a pic of one of mine, this weekend, and put it on here. It's just a small metal tube off of an oil line (tube is about 1/8", end smashed shut, top drilled with a hole about .020"). I'm going to rework mine, because they were originally mounted in the primary drive covers, with the tube sticking through a small hole drilled in the side of the main bearing web in the crankcase.
I've made my own primary cover, so I have to change the oiler setup.
More to come,
JimL