If anyone has a problem with their CCT or just has any worries about this particular bug-bear, I have found a great pic of a cross-section of a Firestorm engine (it's been disected) which clearly shows the cam chain, the gears that drive the cams, the tensioner and it's spring housing (as well as the rest of the engine).
It's very easy to see how it all works for anyone that's curious and wants to know what the internals of the engine look like.
I don't know how to load it onto this post, but I've put it on the "misc" section of the picture gallery or email me and send you the pic.
Richard
