A small problem but can easily be fixed

So I've been playing a lot of Kayn lately and I noticed one fact that seems to be very problematic ..... Whenever you go blue assassin his W out range his ult by far. So, if you happen to be chasing a enemy and you manage to hit them with the very tip of your W (even with the slow) they can get away because your ult wouldn't be in RANGE! ... Sorry guys, got a little carried away there for a sec. Riot, can you please fix this asap? At least make the W and R range equal.