A new steel sprocket @ 2300 miles for me didn't help with the screaming noises - guess my Bevel box was the cause - it got louder as it got hotter. The only cure i found was a pair of decent motorcyclists ear plugs ( as recommended in the handbook!) but that took away a lot of the lovely exhaust noise too, so not so good.
2015 Morgan 4/4 (Wolf fettled) previously 2014 M3W MINI Cooper S and numerous BMC/BL relics.
