Looking for source of old delta parts for model 900 series. I need to cut off a bonnet. DELTA PART # 4053 . Local supply house says they are tryin but seem to be more interested in selling a replacement. No access due to marble wall coverings so that is the last thing we want to do. I have tried every trick in the book to get this to turn but its not going to wh/out the dremmel treatment. Any help will be welcome.