My roller is very inconsistent and im trying to work on it. Sometimes it will roll forever and other times it will start curving as soon as it hits the ground. I was never taught how to do a roller so i dont know the correct motion. I watched a few videos on youtube and couldnt really find a good one. the one i watched had comments on how the guy has no idea what hes talking about etc. Are there any good videos out there? and What is a good technique?