[BrendaAnnD]

Tim

1. I think should be in parallel. Make sure they are not in counter phase. No blowups just no output either.
2. If it sounds fine and no noise, no caps needed. If you suspect they help, then leave them in.
3.maybe check clwmshell? Gotta connect somewhere.

I'm thinking that green/yellow wire likely connects to a copper shield inside the clamshell.