This is a problem I have noticed for a while now and it is something I really want to improve on. I would not classify myself a hard smasher and I believe this is a part of my game that is a huge disadvantage for me. Ideally, I would have a stronger smash as I always find myself not being able to kill off the rallies. Basically, my smashes are more powerful when I am smashing at an angle. This is illustrated in the diagram below. I cannot generate as much power when I smash straight down. What may be causing this and how can I fix it? I believe this is related to why my smashes are generally quite weak. I can also smash harder when I am on the left side of the court (I'm right-handed). This points to a technique problem.