Originally Posted by cny-bikeman
True about the valve stem, major cause of blowouts. Just push the stem into the tire, push the tire down, pull stem back out and inflate.
As long as you have enough valve stem for your pump to grab onto, you don't have to pull the valve stem out. Air pressure will push it out. Too much pulling and tugging on the valve stem, especially if you are using ultralite tubes, can be a bad thing.