You may have an issue with that gas cap. I tried the same thing. Although it is a work of art, it needed to be a vented cap on my bike (2014) which the Rizoma was not. Caused some random nuisance stalling at idle. Usually at the worst possible times; e.g. lane breaking in heavy traffic. Basically it was sucking all of the air out of the tank and when it had nothing left to suck........
I wound up going with the Lightech cap which is a vented unit. Hopefully your model year bike doesn't require a vented cap. Some of the guru's on here can probably answer this.
Not trying to poo poo on your parade. I love Rizoma goodies. Just don't want you to end up in a shitty situation on the road.