1963 Pontiac Remote Mirror Adjustment

[jsslifelike]

Hey, all-

I've been combing through my '63 Chassis Manual, but I can't come up with much. The best I can do is to get the angle visible from the rear quarter. I've been told that adjusting these are a "lost cause", but is that true? Most of this is new to me(and I don't want to do any irreparable damage), so I'm trying not to overthink things and wondering if there's a simple solution I wouldn't be privy to. 

As well, the passenger side fender has a dummy mirror that is at the exact same viewing angle rendering them both basically useless(besides aesthetics). Is there a way to change the fixed angle? It'd be fine if it was at least in the ballpark... 

Thanks in advance!