It really is that simple. I have been studying Gorst, Shaw, and Filler. To me they represent the best of pool. Gorst for deliberate technique, Filler for sniper, and Shaw for natural. The secret to playing like these players is to actually look like these players when you are shooting. If you don't have the exact technique they have then you will never be able to shoot like them. We all know club players who have been batting the balls around the pool hall for decades and have not improved an inch. If you approach pool right you will reach novice to pro level in 3 years tops. If its been longer than 3 years then you simply have stopped improving.
My suggestion is forget everything you know. Watch these players and view yourself shooting ie in the window reflection or video and just try to mimick what they are doing. If you forced Gorst, Shaw, and Filler to shoot the exact way you do, then they would be as bad as you...so the opposite is true.