Congratulations on the GT-381 it is a great machine. I suggest that you call brothers in Memphis, TN. and see about attending one of their classes. I also suggest that you set up the machine as a GT-361 and run it in that mode until to learn the machine and get comfortable in using it. If you don't have a pre-treatment machine get the company to buy one it is a life saver. We have a GT-381 and we love it. Maintenence is easy and have used it for almost a year now and had no problems with it.