Been tweaking my groundstrokes and have a couple Q's. Am a 4.0+ player. On FH I use a semi-western grip and a double bend stroke. Use a smaller/lower loop like Gasquet or Blake instead of a higher one like Hewitt. Not sure if it is a push or pull stroke as I am not clear as to difference. Anyway here are questions on FH. 1) How far out in front is optimum contact? My grip is not an extreme SW. 2) Is there a suggestion about distance between elbow and side when coming through to the hitting zone. I see pros with varying amount of space between elbow and side. I moved it in more lately and seem to have more pop on the ball. 3) Been fooling around with how open hips and chest are at contact. Not sure what this means for ball rotation/power etc.Maybe another way to state this is sometimes I have my racquet dragging more behind the shoulders. Usually it is more with the shoulders and I my chest is sort of at a 45 degree angle at the hit. On BH have one basic question. I have one hander and use full eastern grip. 1) What are keys to produce more topspin? I try to bend knees to get low, and come around outside of ball but still hit flatter than I wish. Will try and get a video up here soon, but those are my basic questions right now. Thanks.