John Afoa calls on Gloucester to turn the screw at scrum-time

John Afoa has urged Gloucester to turn up their scrum power against Harlequins tonight.The Cherry and Whites go into the Kingsholm clash with first-choice props Afoa and Nick Wood packing down with Darren Dawidiuk and Richard Hibbard on the bench.Harlequins are without their captain and loose head prop Joe Marler, who starts against South Africa tomorrow at Twickenham, and Afoa insists Gloucester must take advantage.He said: "We're keen to get our scrum going it's been okay, a bit up and down..., John Afoa calls on Gloucester to turn the screw at scrum-time