Brake light, carb and mirrors help needed 69 c10

[Ganty101]

So firstly the drivers stop light doesn’t work on my truck. The indicator and side lights both work all connections look good etc. Is there some kind of switch that stops the brake lighting up when you’re indicating? If so where abouts is it and do I just replace or can it be fixed?

Secondly the fella I got it off said it had Edelbrock carb fitted. It doesn’t as it’s the standard Rochester Quadrajet which is a bonus! But it needs setting up and I thought while I’m at it I’d get a kit to rebuild it. Any hits, tips and tricks would be appreciated, so would a step by step guide if I’m honest! Haha

Finally my side mirrors are awful. Being in the uk I could do with seeing outta my passenger mirror and when it’s fully adjusted I can see the keen on the other side of the road. Not helpful. Anyone got an idea on good replacements?
Cheers David.