I just bought a new serger for my early Christmas present and I'm getting a little confused. For starters, when I turn the tension dials, it doesn't seem to change how the stitch looks. It's like everyone other thread hangs over the side. Could this be a problem with the knife? I read that if it's cutting to close it could cause that. Also, my other question is when I serge just the regular stitch with the machine and open it up, it looks like the "ladder" stitch. Is there a way to stitch with only the serger and have the seam stay closed? Like when I look inside my knit shirt and the side seams looked serged but the outside looks like a normal stitched seam? I hope this makes sense to someone. I might try to put up some photos later on showing the problem. If you have any help or advice, I would appreciate it very much!