lowered my roof lining the other day to sort my roof rattle...
from memory all the pillar trims need to come out grab handles need to be removed two screws hidden under the flaps...aswell as the seatbelt guides 17mm bolt..sun visors just unscrew and the pillars are just held by clips...the B pillars have a hidden screw at the bottom that you cant get to without removing the
lower rear cards but they should flex out the way enough for removal...the lining itself is held by some black plastic plugs that were a firm tug to remove and a few got f**ked and wouldns go back in so maybe buy some more if your worried but its held by the pillars anyway so i didnt bother...hope that helps...
Oh and dont be fooled by how easy they are to remove there a bit of a pain to get back in properly...