Manifold heat control valve replacement?

Yes, the linked penetrant is the current labelling of the same old heat control valve solvent. Weird greyish-black colour, weird indescribable smell.

Which link isn't working for the electric choke? I just tried the links I posted and they all seem to work; electric choke info is here. You'll need a № 1231 kit.
good to know it is still available, it's the best I've ever used. One cautionary note, if you use it while on your back underneath your car, you would be wise to wear eye protection. The little capillary straw on the nozzle caught on something and it flicked a drop of that stuff into my eye. It burned like you wouldn't believe!!