hi all. i'm new to the forum. i've recently bought a 1979 300cd with 150k. everything seems to work fine except reverse. i've heard people speak of vacuum issues, i may be blind, but i can't find a vacuum line to this trans anywhere. anyone ever experienced anything like this before? i fixed a few broken vacuum lines under the hood, and repaired a electrical plug that goes into the trans, but no change. i did get the a/c to start working though. any thoughts would be greatly appreciated..