I bought those cheapie Forte City ST tires for my new commuter build and am having a hell of a time with them. They mount fine and I'm using the right tube, but they are low on one side which creates a "hop" in the tire. Both tires are like this. I've mounted and remounted several times with the same result. Took them off and put my Armadillos on and they mount perfectly. Wanted to use the Forte one's because they are about 100 pounds lighter than the Armadillos. Any tips on getting these things on right? Never had this kind of trouble with tires before.