Trans shift points?
Here's what I've done for years...
On your VB, turn in the large flanged screw (Red arrow) to take up the clearance marked in blue.
Tighten until there is 0 lash felt against spring pressure on the Throttle Valve (green arrow), then turn in an additional 1/4 - 3/8 turn.
This puts 'preload' on the TV spool, forcing the Governor pressure to rise a bit, so that the shuttle valve doesn't just snap over causing a low Governor pressure shift.
It's a simple fix but, you do have to drop the pan. This bypasses the trial and error with the governor wts.
I don't suggest going to a half turn, cause it will hold 2nd until about 3000 rpm.
Here's what I've done for years...
On your VB, turn in the large flanged screw (Red arrow) to take up the clearance marked in blue.
Tighten until there is 0 lash felt against spring pressure on the Throttle Valve (green arrow), then turn in an additional 1/4 - 3/8 turn.
This puts 'preload' on the TV spool, forcing the Governor pressure to rise a bit, so that the shuttle valve doesn't just snap over causing a low Governor pressure shift.
It's a simple fix but, you do have to drop the pan. This bypasses the trial and error with the governor wts.
I don't suggest going to a half turn, cause it will hold 2nd until about 3000 rpm.