Just treated my 79 xs to a new exhaust system made by delkevic 2 into one, a set of tapered rollers for the headstock and needle rollers for the swing arm cortesy of all balls, ouch almost $500 , but I am going to give the old girl a little bit of a fettle over winter, and as I don't drink or smoke I thought what the heck if I don't spend it the wife will.
http://www.ebay.co.uk/itm/291386076828?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649
http://www.ebay.co.uk/itm/291386076828?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649