Merry christmas walker...I boxed for 9 months before my first fight. my coach at the time wouldn't even teach me anything else but to jab right up until it.

Step jab, snapping it etc . elbow tight to body. Guard in right place when throwing it. And yea, a ton of repetition. I am fairly sure my jab was better then, then it is now...since I learned all this other stuff and began developing a style.

Am probably due for refresher on how to jab again. Your coach sounds like he knows what he's doing.