The lock to the helmet compartment under the saddle on my Aprilia Mojito Custom 2006 is broken. I'm not exactly sure what parts are actually needed to be replaced, but I'm thinking I probably have to change them all (except the hinge on the saddle). Would that mean that I have to order these parts: 1, 6, 7, 8, 9, 10, 12, 13, 14, 15 and 16? Is a key included with part 1? Also, when checking with my local Aprilia dealer, I was told that there was no way to change the compartment lock without also replacing the ignition. Is that true, or is it possible to have separate keys for the ignition and compartment lock?

Illustration of spare parts regarding the saddle compartment lock.