New to mig welding. Started welding roll cage tubing and bead is high and looks like a bead of corking. The pipe is 1 5/8 .135 thick. My setting are 5 speed and 5 power. I don't know if Im welding to slow, or gas pressures are off. Im using a snap on mig welder. Please Help this is small race car project and don't want to TIG. Any post will help. Thank You