The problem with Morse Code charts is that when you stop to look things up, you WILL have problems sending/receiving to the point it'll just be "noise" - some of your dit's will be longer than your dah's etc

I learned code well enough to get my ticket (5 wpm) and then didn't prectice - I have a hard enough time doing code, and I can still do it in my head. I's say forget the chart