I've never had a stitch regulator, and I have machine quilted HUNDREDS of things. I am not sure I would like the stitch regulator, anyhow... I am kind of a control freak.

I just use a very old Viking Turissa regular sewing machine from the 70's. Works great.
One thing that will help you is to release the downward pressure on your presser foot. Most machines have this adjustment. The older machines have a spring button on top. Newer ones may have a dial on the left side of the machine.
You don't need to adjust stitch length - once you have dropped the feed dogs, the stitch length is not a factor.
You need to maintain the right speed balance between your hands and feet - in other words, you want to move the fabric as fast as the motor is running. Most people find this easiest to do if they step on the gas and move the quilt top fairly steadily. I recommend practicing on scraps before you start on your quilt. Make loops and spirals. Write your name. It really is like drawing, but it's as if you are holding the pencil (needle) in one place and moving the paper(quilt) underneath it. Make sure that every time you stop moving, the needle is in the down position.
My best advice to you, however, is to take a class. There are so many helpful things to learn from a good teacher.