UPDATE: 3M did come through with a refund, they did not come thru with a solution for the problem I was having, or instructions to help contend with the new sprayer, they were more into appeasement (which is not a bad thing). Anyway I found something new out on my own. I twisted the slot horizontal, which was counter intuitive for the left-to-right-down-right-to-left zig-zag movement pattern I was going to make with my arms. It was just a try on my part, a curiosity. I got a very satisfactory result, and had that been my original experience I would have never authored this observation about the new spray tip. I presume, but haven't tried, that if I turned the slot vertical that spraying up-down-down-up would go better (again counter intuitive). I change the review from 2 to 4,holding back on the 5th star because 3M could have explained better on the can, or packed the can in a retail box with instructions, or created a YouTube example and pointed to that on the can for the sake of brevity. To leave the customers to find out by means of serendipity how to work with the new tip was asking a lot IMHO.  Even now it's not too late for them to instruct the public with what they had in mind instead of waiting for the public to guess what design engineers had in mind. My 2