Had this since new and never really been an issue until recently. (I did post a similar issue in Jan 18 but didn’t resolve it so this is technically the same issue I suppose) I am running 0.8 wire and am having to use the 0.6 wire guide just to grip the wire and clamp it down to max (5) just to get it to feed and then there is a slight spot where it’s almost as if it’s pausing but it gets away with it. All the time the wire feed motor is running perfectly which leads me to believe it is the drum spool causing my ills. It is tight throughout although I am using 5kg reels of wire with the locating lug in the side of the 5kg reel which turns the spool. If it were on a plain spool without a locating lug but just a tight lock nut I feel it would turn ok.