i do a lot of sheetmetal butt welding on my old cars. i got this 180 for the job and i find the wire sticking to the spot weld quite a lot as the trigger is released. C25 gas and 023 wire. i used my old snapon (century) mig for 25 years and it never did that. any ideas or do these welders tend to do that? another thing that bugs me is with the spot welding, there's a lot more sparks coming off every spot than the old snapon ever did.