So I thought as I was taking bits and pieces off the bike it would be easier to sort out the blowing exhaust at the same time. Or so I thought. In order to get to the exhaust manifold and get the old exhaust off and the new one on I had to remove the radiator. Once I had done that I found out that the rattle that I had thought was internal was actually external as one of the pipe collars had broken. Getting the manifold studs out wasn’t too tough and the new ones went in fine, the new downpipes looked great when they were on.