I've nothing to add about fitting, sorry. But if i were you, whilst it's unfitted, I'd start loading those tips with layers of sealant, like poorboys, etc. I know the tips are removable but it's still a bit of a pain in the arse having to take them off to give a relly good polish and then position them again. the sealant will just give them a good headstart as regards protection from road grime, tar, soot, etc