hi guys, im a newbie& have only posted one thread, the replies to that were v helpful, but im still not getting my brand new lincoln 191c powertec mig to work properlyim using 08mm wire & using co2 as the shielding gas. when i try to weld eg a patch on a car sill, the machine does'nt sound right, instead deep continual buzzing ,it sounds more like a dud sparkler. could it be that the machine just dies not work well with co2, or 08mm wire, im just clutching at straws,any help & ideas vvv much appreaciated thanks v much everyone mikey 123