beneteau 461

The main sail furler on my Benetau 461 (2000) is causing me lots of problems. On some videos I have seen people unfurling their main by just releasing the furler line and perhaps a bit of wind - I have to use a winch and still get stuck when just a third of the main is out. Even my winch cannot...

I need to access the nuts of the bolts holding a U bracket to change out the block leading back to cockpit. There is an access panel on the port side. Not so on the starboard. Seems I may need to take down the headliner. Any tips on doing that without destroying the headliner ?