first learn how to just glance the wall with any pedalling tech, for example the bad-good. then start working up to about 42-43". then you'll realize that your technique is shite (this is normal), then you'll have to relearn the whole thing, with hitting lower and using 3/4 or full pedal rotation. This is what i did. I was stuck on a tad under 42" for almost a year, then i relearnt the tap altogether. Just give it time, that's the most important thing. Taps are weird, but keep at it. At first, you'll almost manual into the tap. It's easier than pedalling all the way into the tap (at first anyways). A low front end really helps tapping, I remember flipping my stem while learning taps, just to get the hang of it..