There is a piece on my transmission that is leaking. It is near the tailshaft, right near the speedo cable. It looks like a bolt, with a nut above it and you can tap it down with your finger. It may be a fill plug of some sort. Does anyone have any idea of what this is? That is the best way that I can describe it. It resembles a bolt going into the transmission and you can tap it down with your finger, and you can also turn it. If anyone can help me out with this I would appreciate it. Or does anyone know of an exploded view of a c-4 that I might be able to look at it?