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Rear brakes lock up

Well like I said before ,only thing left Is proportioning valve ,I pulled the one in the Jeep apart and it looks good ,the plunger/O-ring on the piston is sloppy though,not sure how tight it should be on the piston for the residual valve itself ,I will have a new valve Tuesday,if this doesn’t work,I’ll just plumb in a manual proportioning valve on the rear brake line and just adjust it myself
 
Well I added a new proportioning valve ,zero difference ,everything I have changed has done zero difference . I Plummer in an adjustable Proportioning Valve and it stops on a dime,no rear lock up whatsoever,stops like my old JK Rubicon did ,maybe better. Wish I could post pictures of the setup
 
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