[Ten Hammers]

Just some thoughts. The 2 settings you DO have to control with flux core are fire (either amperage or volts) and wire(speed). These must be in fair concert or you will get either lotta splatter or irregular wire flowing problems. The Good Lord only knows how old that wire was that you bought at Wally World. I have had bad wire ( Forney ) from a farm store ( myself and another fella I know ). this was solid wire but fact still remains. You need proper feed roller tension also and wire roll tension as well. Is this a 115VAC welder or
230VAC ? Is is capable of either voltage ( doubtful ) ? Is the contact tip screwed into the gun head snugly or is it loose ? I have seen a few problems with MIG and hope you can get this rig runnin'. Good luck. There are some here with a lot more experience than me.