[lincpimp]

I am refereing to adding an external cap between the main power wires on the esc. I doubt that will help much to be honest, your setup is not drawing that much current.

You can use a y cable to hook 2 rx wires to one of the rx plugs, pretty straightforward.

Are you running 2s or 3s? That would be very helpful to me. Cause the external bec will not do much for heat on 2s, but it will make a big difference on 3s.