fixing my old civic...

[Enjoi Honda]

my civic that i have is broken, well i use the body but u know, the actual car part is broken. While trying to do some type of mod back in the day, i broke off the plastic thing on the bottom of the ZZ case where the clip from the controller goes to hold it in, the little part is still in the chassis of the car, but its all smashed up. i can get it out im sure, but im wondering if theres a better way to fix it? if i take it out, can i still use hte stock charger?

secondly, one of the tiny copper wires for steering i believe, is broken. how do you fix this? i was thinking solder, but theyre so small, i cant solder them....should i try twisting together?