A904 Hard 1-2 Shift and Reverse

What is the idle speed? Too fast of a idle and it will bang into gear. It could probably use a band and linkage adjustment.
Hard to say without a tachometer. However, I turned the idle down quite a bit and reverse has settled down to normal now only 1-2 is hard shifting. I didn't realize how high the idle was, purrrrs like a kitten now. Thank you for that Mike