Sorry if I was unclear on my response, but I don’t want you to cue your knees directly which is causing you to take pity patty steps. Knee lift will improve as power and mobility improves. Work on improving the flexibility of your quads/psoas and strengthening the posterior muscles. During the start you should feel like you are pushing well behind your center of gravity and as you start to gain momentum the action should feel like you are stepping straight down. The more power you have and the faster you are running the better your mechanics will get. Proper mechanics are not possible if the power isn’t there yet.