Hi all, my uncle's helping me to repair my series 3 109, we just went to replace front d/side outrigger, the bottom of the door pillar just came away in my uncle's hand ( tube is rusted away 5 inches up ), ordered a new 1, but unlike the p/side we don't have any of the outrigger or door pillar to ensure alignment, any advice, measurements, hints or tips would be appreciated.