Hmm, nothing tingling here, mate!
Had a good spray round under the tank & round the plug leads etc and left it to marinate for a while. Still started!
Next phase, let it dry out and tomorrow give the kill switch area soaking and see it that works - or not as the case may be.
Next phase after that? - do as Blue biker suggests & beat the damn thing... then buy shares in dielectric grease/WD40 etc...