My new to me USA 83 coupe has a sunroof of course. Previous owner never opened it and I’m debating whether I should. I bought a coupe as I found I didn’t drop my previous convertibles tops much. I’ve pushed the open switch a bit and it seems to move but I don’t want to open a can of worms and have another project. Searching threads and parts sellers it appears there are some parts available. Anyone rebuilt theirs lately to confirm this. Advice?