Hi scrcmedic, welcome. There are a number of issues that can cause problems. If you are having control issues make sure the blade tension is correct. Many new scrollers have a tendency to not tension the blade enough. Take a look at the program I have on my blog that helps teach what a properly tensioned blade sounds like. If you get a chance take a look at some of my videos. Many of them show techniques. Its often easier to learn if you see it rather than read it.
