I have a leak at the rear where the hardtop to body foam seal has perished or gone hard. Is it possible to loosen the fixings to create enough space to fit a new seal or does the panel need to come out which will affect other seals like upper panel to roof seal?
don’t know how useful this is but done the roof on my old series 3 safari
got some hard neoprene rubber to slide inbetween the roof and side panels, borrowed a high lift jack and some 4x2 timbers
put the timber length ways on the roof , timbers width ways across the inside wheel arches , then jacked each side up and placed upright timbers for support , used the jack to break the seals and timbers not to dent the roof
the rubber wasn’t like a sponge material , if I remember it’s was the same one that is placed under the bottom of the windscreen
used a cordless , long socket and extension bar with a ratchet the other side to get enough nuts snd bolts off in order I could lift what I needed to
hope it helps a little