I know how to do all the basic types of serves. Lately ive been hitting everything slice/kicker to keep my consistency up. I used to have an extremely flat on serve that scored me a lot of aces but for some reason I CANNOT hit it flat if my life depended on it. Half of the time, Ill feel off balance or something and just hit it with a lot of spin and it will go in . The other half is very ugly and just goes a random direction.
Does anyone have any tips on how to get rid of all the spin and just hit it flat again? I know i can do it, but i can't find it.