:question: Hi Frederick again. I don't mean to clotter up the forum but I'm so new at this and alittle slow thinking. How does one check the rear tire press. on rear duals. I just see one line. It has an odd fitg. on the end and it does not look like the typical valve stem. It also has a long rubber hose around it. Perhaps to prevent banging against slot in wheel simulator? (hub cap?). Where's the other valve stem for the inside tire? Couldn't see much with the wheel simulator on. Do I need to take wheel simulator off? Tried it. Affraid I might put bend creases on edge of wheel siulator. Need special tool? Thanks again. Fred Rubio from Pasco, Wa.