This weekend I pulled the engine and trans from my 69 GS 350. It has what I believe, but may be wrong, 66 M20 in it. Prior to pulling I read to drain trans oil or it'll get all over the place. So I pulled the fill plug (square bolt) on the passenger side of trans about half way up, to see if anything would come out, nothing did. Didn't stick my finger in there to see if I could feel the fluid, I know I should have. Decided to pull trans anyways and just put a drain pan where the drive shaft meets the trans (not sure what it's called). Pulled it all the way out and i got may a drop of two of fluid. Was expecting much more. This common? Could this mean that I dont have any/much trans fluid in there? Anything specific I should check for?