2004 BMW R 1200 CL "timing chain rattle startup" Questions

...rattle on startup. The noise is from cam chain slack. A hydraulic tensioner is used in the engine on each side as there are two cam chains. The tensioner leaks down after the engine sits for a while ...

...timing chain no I have a c50 2005 it seems to have a very disturbing noise in the engine..I have had the valvel adjusted but it still rattles very loudly.when it was new there was a matter with the ...