hi all ,i got a stainless downtube for te great farjo with 2 collets (the part that bolt to head)broken i spent a good few hours sitting and cleaning the exhaust and welded the collets back together(done a great job if i do say so myself!) gone to fit tis morning and all going well untill one of the other collets broke! i checked these before fitting and there was no cracks etc and i didnt tigten them up that much so just wondered has anyone else had this problem? meens iv now got to remove eaders again and repair this doh