thanks, it turns out i pulled up the diagram to the deere and the washer on the adjusment nut was installed in the wrong order, so it wouldnt release and wore pads down.so i got new pads and cleaned the "plungers". works good now. when i explained this to the dealer they said it was whoever set it up and did final check. i agreed, then told them they did it. no no no they say! oh well its fixed. thanks