Handbrake Adjustments

Hi Guys. I am new to this owners club and owning a Renault, (well its my sons first car and we picked it up yesterday).  A couple of things I hope you can help me with. Firstly the roof can be abit temperamental. The back cover goes up and down fine but sometimes the roof doesn't open, you can hear it trying to but nothing happens, other times it  all works perfectly fine. Secondly does anyone know how to adjust the handbrake. I've looked on YouTube and I think it's remove heatshield underneath to gain access to the adjusting nut??. Hope someone can help.

The roof panel does have a tenancy to stick just give it a gentle push. But a rub of silicon grease along the rubber seal normally sorts that. The catches above the windscreen also like a bit of silicon grease also the hinges at the back of the boot lid. 

As for brakes , sorry I don't touch them leave it to the garage.

Welcome to Wind ownership.