Thanks Rico I see your point regarding sceptre, but chalice doesn’t help against a damping matrix.
When keeper resolves a damping matrix you are forced to play beat down with only 3 beat sticks and 4 puny goblins.

Thanks for the tips regarding side boarding Steve, but would you mind giving a hint about what to remove from the main deck, for the suggested sideboard cards.
I think the maindeck is so tight, that it makes sideboarding very difficult. Especially against control. This is because you don't have a lot of cards that are simply bad in the match up and therefore easy to remove. Instead you have to evaluate the card's usefulness, which can be quite difficult at times, as one card brought in from the sideboard may only be slightly better than the one it replaces. This makes identification of the correct sideboard strategy difficult.
I always side in some artifact destruction vs. keeper, because all the keeper decks I play against are using damping matrix or sceptre. In that match up I remove chalice, because keeper has so much artifact hate with diverse casting cost. Is this just dead wrong?