Also, I've removed the radiator and given it a quick clean on the pipe fittings and noticed that the actual matrix looks like it has speckles of brass on it - were these supposed to be brass but turned grey with muck? I have no intention of getting the brasso out for this, just curious.
Oh, and a general question about carbs - on restored cars they're often polished up like chrome itself, but the surface on my carb is grubby, pretty rough, and doesnt look like it was ever shiny. Were they shiny from new, or is this just an obsession amongst restorers

Cheers in advance,
Phil