curtains

Hi, I’ve been attempting to hang a curtain rail up for nice blackout curtains that are triple layered. However I cannot seem to drill any further than 1-2cm into the wall above sliding patio doors. Idk whether I need a stronger drill bit, or whether to not drill above as there are radiator...

I'm renovating a flat and I've got curtain tracks in the main living room with only a couple of gliders on them. I want to get new gliders on the track but the glider end pieces don't seem easy to remove. They don't seem to rotate off and, if they have a screw holding them in place, it must be...