Replacing aft cockpit seat covers - Sovran 3900

[pallor]

I am in the process of replacing the seating cover in the aft cockpit area (u shape lounge area) I have been able to remove all seating except one area - the cushion that is under the grab handle as you move from the cockpit into the helm station area. It seems the only access to remove the bolts for this handle and cushion is from the headliner in the cabin tv lounge. Has anyone tried this? Any advice welcome?

Thanks
PR