I HATE my MillerMatic 252

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I posted over on Miller forum also. 2010 MM252 worked great for years with .030 through .045. It NEVER would push .023. I've been through a bunch of suggestions & have bought a pound or more of drive rollers appropriate for each variety of wire. Progressively it is getting worse. The 100 amp mini gun they sold me as a cure for birdnest of .023 wire NEVER worked.The M25 gun that came with the welder melted when I tried Dual Shield, I replaced all the injured parts & it worked fine years with .030 & .035. I bought a 400 amp Bernard gun for dual shield. It worked fine a number of years. Now, three guns, four varieties of wire, I can push wire no problem, strike an arc, it'll birdnest.After taking the liner out today to inspect one more time, finding nothing, in desperation I squirted the spool of .045 Dual shield with a quick sprits of WD40. It seemed to help. 12V71 suggested inspecting the ruined wire. It has tracks from the knurled U rollers, & spin marks where it slips on the wire. There is no drag on the spool I can see.What am I missing?No authorized service in my state or adjacent. Maine is closest I've found. All those close on the Miller website are closed. I can't live without this months!Last edited by Willie B; 7 Hours Ago at 08:36 PM.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:It's obvious that you don't want to listen, but here it goes. Check your drive roll alignment. Yours rolls are slipping because they are not in LINE. For .045 , get a piece of .045 stainless tig wire and check with that.
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