I think Dunster will be the least of our problems, and expect him to have an ok enough game - the equivalent to any others in our backline.
However I think we'll struggle up the middle, because when Greig and/or Paulo need a break after 20-25mins (Paulo can go longer, but has looked less fit after suspension), AND when Hodgson and Hopgood need a break when they start missing tackles at around 20-25mins, AND when all we have on our bench to cover four middles who'll be gassed at the same time is Hands (he'll defend ok), Makatoa, Doorey, and Cartwright... it won't take much for the Knights to have watched our previous games and go hunting up the middle and put on a quick 18 points in that period before halftime.
Maybe we can claw some back in the second half when we tend play more openly / catch-up / Parraball - but if we let them score earlier than the danger period (e.g. through kicks) then there's too much of a start to play catch-up with our out of form and out of ideas squad.