Hey Folks,


I've been running a 300mpx for a few months and its a good little machine. I bought the magnum for the aluminum option and only just recently plugged it in. Right out of the box the gas valve doesn't hold, and Ill have to disassemble the trigger
mechanism to investigate. I installed a spool of Radnor 3/64 Aluminum wire and running 100% argon the thing is just all over the place. Ive tried long arc short arc, ran through the volt and wire speed ranges, ran the gas low and high, used the ready/set/weld feature, but cant find a sweet spot. The arc appears to hunt, randomly depositing, but mostly arcing right on the tip leaving globs and ruining tips. I'm planning to call lincoln tomorrow, but their customer services isn't what it used to be.

This isn't my cup of tea, and I'm hoping its something simple I'm overlooking. Any tips would be greatly appreciated. Thanks.