i been away from mig welding for some time now, i need some tips on the proper way to run the mig tip and wire feeder. is the wire feeder button always held in while welding steel or is it fed a little then back off then on again.i have problems that when welding to much wire comes out to fast. i know its wire feeder speed and needs to be turned down.i have a weld test coming up with a welding company. the want to do circular weld test.its for welding bushings. any tips on this and other things i need to know.