Excellent info, Frank. Thanks a lot.
I might add, we always test the solenoids + pistons inside the bore with ATF when the valve body is disassembled, if it moves softly. We also polish the solenoids in such case as well as the bore. Usually helps to overcome the problem. Otherwise you have to get hold of another used valve body and use the parts needed for swopping. That is an old youtube from 7 years ago when we were still learning.
https://www.youtube.com/watch?v=iRN1jwEkydg
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http://1.bp.blogspot.com/-17n8VCgTdJ...0/P1180786.jpg