I have the Lincoln 135A also. I use the flux core wire since I never got a gas tank yet. What I learned is that I have to cut a fresh edge on the wire every time. So I just snip off the tip of the wire each time. I have been able to do some very thin stuff with it actually. You can visit www.weldingweb.com also for too much information...

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra