I have never noticed any different in shift quality in Motorhomes
compared to any other 727.
However, the governor weights are different in different 727 which affects
the shift RPM but I never noticed any difference in shift quality there either.
50 or 60 years ago, I removed the accumulator spring and turned up the line pressure
on the valve body a few turns = that definitely made a difference in the shift quality.
I do not know if over 50,000 or 100,000 it would be detrimental and I have not done that
for years. These days I can afford a new valve body.