Miilermatic 185......

Pulled the trigger with the lid open again. Noticed that the wire, pre-pinch point developed a slight looseness when the trigger was released. Cut the wire and turned spool by hand, had a fair amount of drag to it. Tightened the spool up some just to see what happens......no more burn back. Wire is still slightly loose in the gun with the tip in it but no where like it was. Will look for some more scrap to see what the hell happens.....Hopefully the problem is solved....I would like to Thank every one for there advice.....