I think I'd take a closer look at the inlet manifold seal. You said earlier that spraying brake cleaner around it failed to indicate any problem. I'm not sure that proves anything really, so in the light of the ongoing symptoms, I'll suggest fitting a new IMG/seal. Get the black/Viton version. I note you've got the VVC version. Is the poor starting coincident with that?
TC
Last edited by T-Cut; 12th June 2020 at 09:05..
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