My vacuum wipers work great (rebuilt motor/fairly new vac. tubing) when I wrap rags around the blades, but on a wet windshield they hang up. The blade rubber is ancient, but looks pristine so have never felt the need to replace. Has anyone out there with vac. wipers ever seen a big improvement in function (less drag) with new blades? (I only change my electric grocery-getter wipers when they start to smear). I also wonder if the latest high-silicon rubber formula is available in a 50s configuration, and would that make a difference in friction?

6 VOLTS/POS. GRD. NW INDIANA