Hi all in need all your expertise please. I have changed the liner, spring in the torch, nozzle, tip ,etc but am really struggling. The wire is bright etc, but when welding, The wire stops feeding. I shake or tap the torch and the wire springs out again. It occasionally burns back to the tip. I have altered the wire tension and if it's tight I get a birds nest near the feed roller. I suspected the liner so changed it. Everyone has told me to keep the sleeve as straight as possible but that's not always practical as you all know. I thought about getting a new outer sleeve but don't fancy all the rewireing. Any toughts?