I've gone through 2 Presta tubes trying to get them installed in my Paramount rear tire. Somehow or other I'm pinching a hole in the tube. This is my first time with smaller wheels and tires.
I've been using mild soapy water on the bead while pulling the tire off of the rim and re-installing. With my second try installing a new tube I stuffed the tube inside of the tire first and put a little air in it to get it straightened out.