How good are your tic-tacs? I've found that people who have worked out the balance of horizontal and vertical push needed for proper grip in the tic-tac usually do better transitioning to the wall-run. When you first start out, play around with trying to get the most height possible on your first step, even if you jump out away from the wall the first few times (remember to land well). After you've really maximized the power and momentum you can put into the move, work on tweaking it to get your upper body closer to the wall as you go along. When you reach the apex of your jump, you will be in a semi-V position (upper body towards the wall, hips out, feet on the wall) which will allow some of the thrust to push your in towards the edge. From there it's a matter of really utilizing a coordinated effort to pull and push as you retain as much momentum from the run and the kick as possible. Do you have any video?