Case-O-Matic dampering valve for a 411 b ?

[olgentdc]

My 58 yr. build little 400 has decisive jerk when the inch pedal is released even at low idle . Is there a replacement valve for the 400 that will take the snap out of engaginging the torque convertor ? I have been told that there is a dampering valve replacement for the 800 and 730 Case-O -Matic But I never researched if it was when it engages in Direct drive or when the clutch pedal is engaged ?

 

[casecollectorsc]

I have a 58 800 com and a 59 800. The 59 is smooth as silk backing up to equipment. The 58 is jerky. I have been told the 59s had a different feathering valve for the com. Sure is a lot nicer.