You don't have to drop the liner fully to loosen the rails. I changed my drivers side rail last year as it was corroded at the joint. I was able to do that without having to drop the headliner completely,

__________________


| '23 Tesla MY LR Wife's Daily | '22 Tesla MY P - My daily |'09 E70 X5 35D - retired| '17 F15 X5 35D - Retired | '16 F15 35D - Work Horse |
|