Hi I have a braided valve extension on my rear inner wheel of my Class A. It's difficult to air up. The outer wheel (not with braided extension) accepst air just find. It's like my air chuck does not fit. It was purchased at Wal-mart. Or perhaps a different type of braided line is in order. Can't ever get an accurate reading. Are there others that had this problems. And why is this print so small, can't hardly read it! Thanks again for all the prior help! Fred from Pasco, WA.