[olopezm]

The 20,000 MXN quote I'm talking about came from a Ford dealer, not a shop. I've been willing to pay for it but unfortunately money is tight and have had other health problems with a family member so the windstar has to wait...

I remember reading somewhere that an incorrectly positioned valve (on the side of the valve body) would cause a harsh shifting. The guy took it out and turned it 180º, reinstalled and tested and the problem was fixed.

Good luck with your minivan; hopefully that transmission will last.

Oscar.