purchased a new M&W haybaler new in 2003. always made good firm bales. around 1000 pounds. last year seems like when it starts to get full the bale starts to slip inside the chamber like a chain is jumping. when it starts doing this i go ahead and get it tied. dont believe that it is a 1000 pound bale. have tighten the slip clutch a time or two. only thing i think it can be is there are a lot of bars about 3/8 x 5/8 x4.5 feet long welded to the drum that turns the bale. the corner of the bar that gets to the bale first is getting rounded off and the back side is still square. thinking it might be losing traction. wonder if i welded thicker bars i would get traction back? any ideas or if you have had this problem please comment thanks