A MIG welder ???

Century is now owned by Clore automotive. They are into battery chargers more than welding these days and they have let all their old field reps go. You may get some insights from them if you can get to the right person. The gentleman I knew was Ed Chandler from the central Illinois area. I don't believe Ed is still living. The last time I spoke to someone at Clore, they had never heard of him.

I'm pretty much convinced that your problem is not in the way you are setting up your equipment. I'd be surprised if it did not stem from internal problems. A good electric motor shop can probably diagnose it. I'd check with Clore first regarding parts availability.

I tried flux core but did not care fot it. The arc is more erratic and more splatter. If you can disintegrate the wire at a high wire speed; it sounds like you have plenty of amps available. I run at 3 on a 0 to 10 dial.

Check that the wire feeds evenly (tension adj. on drive roller)Using the stick electrode may not be a valid test since the stick machine is constant current while the mig is constant voltage.

Check all the connections and maybe try a different roll of wire. I have a hunch that its your wire. Regards, Mike

If this works, I would check the 4 diodes that convert the ac out of the main transformer to dc. If you have any bad diodes you can buy replacements from a electronic supply house. Must have enough amps and voltage rating.

I use a 200 amp diode bridge on the output of my buzz box to use dc.

Cherry red wire at a high wire speed sounds like not enough voltage. You could also have bad filter capacitors. The caps connect at the output of the thr diodes. Don't give up on it yet, Mike

Almost sounds like a bad ground. I'm sure you've check the clamp but how about the ground cable?
Could also be the wire is shorting out to the liner, maybe missing the insulator on the liner feed tip? Or on the gun side of the liner?
Have you tried a new tip?

Or could be one of the other suggestions.

T_Bone