Surface RT: Does yours actually 'click in'?
Because I have a cyan and now also a black cover (as a spare going forwards after realising that using the cyan cover everywhere results in it becoming not-so-cyan fairly quickly), and both, when making the engagement, sounds more like - as I may have written elsewhere - someone hitting a very stiff rug with a tennis racket at a distance. More a 'thwoppp' with the click buried somewhere in there, than the click itself.
Do you "click in"?
Or are you pounding the rug?