I was just going to say to remove any carbon build up you may find under the rocker cover as the M44s have injectors that spray oil on the cams and they can get blocked by it.

I'm no expert in anyway by the way, just relaying what the more knowledgeable folks' have advised

On a side note, fantastic wheels you picked up there. Are they the Azevs that were for sale on dd/adverts very recently?