some use windex- I use paste.
2 good knees- which I dont have but I kneel on the edges of the tire with the a 2x4s under the areas of where I kneel as I work it around. The 2x keeps he bottom up in the relief and my poor old knees keep the top down. I lubricate the tire and rim, and once over that tight spot it pops right on. Kendas are tough but for a good side wall it is worth a bloody knuckle or two.