Frustrated: Chris HarrisCHRIS Harris aims to use his frustration at Scotland’s Six Nations campaign by helping propel Gloucester into the top four of the Premiership.Gloucester started the current round of matches in sixth place, but had two games in hand on the two teams immediately above them, Sale and Exeter, and three points to make up.If they are awarded the points from the match against Worcester at Kingsholm that was cancelled last month because the Warriors were hit by Covid cases, it would be enough to take them into fourth with a game in hand.“We are not l...