Schwalbe has a product called "easy fit" which their website describes as "Special assembly liquid for bicycle tires. A practical sponge applicator allows the liquid to be applied to the tire bead very simply and without smudging fingers. When inflating, the tire bead slides easily into the correct position on the rim. The liquid completely evaporates after about 10 minutes! Sponge applicator, 50 ml, Art-Nr. 3700 Refill, 1000 ml, Art-Nr. 3701" Is this a useful product? Anyone have actual experience using this product?