Need some help - Roofbars on my Fiesta

Just a long shot really.

I’ve got a set of genuine Ford roofbars for my 2005 3dr Fiesta ST, I got them off ebay at a ridiculously cheapo price but haven’t any instructions for fitting. Has anyone got a set or can give me some guidance. As far as I can see you need to remove some or all of the black roof moulding to attach the bars but it seems well stuck down and I’m nervous about wrecking my pride and joy. I really want to get this sorted as the Thule system looks messy with the short roof adaptors for the 3 door.

Cheers…