The spring finger plate had wear marks in it that I'm guessing made it act up. A few rollers were falling over sideways and snapping back into position.
This is also a 73 trans. Wonder if it's a one-year feature lol.
My 64 904 doesn't act like this. Is there a way to figure out if it's a non-low gear band apply? If I take off in manual low it engine brakes. In drive it coasts.