Seeking the wisdom from POBC. Having gathered all of the necessary parts I need t fit them to my car (2012 Roadsport SV). Ideally want to be able take it off for normal use. Looks like bosses are in the rear chassis rail so is it just a case of removing the number plate and drilling through, then bolting / wiring? Then the bit I'm most concerned about, fitting the wheel holding bolt, sleeve assembly. All guidance, experience gratefully received - my build manual simply states that the carrier will have been fitted at the factory if specified! Thanks in advance Garry