I am having trouble making 90* turns and it seems I am not improving just getting worse. What I am working on now is 1/2" thick red oak and using FD UR #3 blades. I am running my saw at about 75% and have been slowing it down and speeding it up, but no luck. I also have checked the blade to make sure it's tight and sharp. I do know part of it is my vision and I am having cataract surgery next month. I will be so happy. I just don't think it's all my vision.