Bands may be slipping? Help please
Rick.
You can try the following. The picture is of a 727 trans but the 904 is very similar.
You may find your shifts coming in late & hard, after wiring the lever back, but with the throttle pressure lever wired at the rearmost stop, the throttle pressure is at maximum.
I would give it a try to see if there is any change in your shudder. This is just for a trial & by no means a permanent remedy.
Get the rest of the TPL & hook it up earliest.
Maybe some transmission work is needed after all.
Cheers & a GR8 weekend. Gaz