I do something similar to this.I'll use the upper half of my feet (with shoes on) to help pull the uneven parts out more. Hard to describe by typing. It's like standing on the edge of the tire with the balls of your feet. The opposite side of the tire will leave the ground as I do this.
I do this at a medium psi level, and with lots of soapy water all around to get it to work around the way I want. Then I air it up to around 25psi to solidify the positioning.