ah, the perennial `wire stick' problem!
Assuming you mean wire sticking in the torch:
1. Rusty wire.
2. worn tip.
3. torch liner jammed up with debris.
4. Wire drive rolls dirty, or worn out.
If you mean `sticking on the job as you try to weld,:
1. Voltage too low.
Wire feed too high (for the voltage).
Bad earth connection.
4. Holding torch too far away from job.
5. Gas blockage (if using solid wire).
If all else fails, get somebody with MIG experience to test run it. "It ain't rocket science!"
(although I conned people that it is- I was Welding Engineer at Rheem from 1979 until Xmas, 2003)
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
