David Humphreys was left with a familiar feeling of frustration after Gloucester fell short of a comeback against Harlequins at Twickenham.
Down 28-10 heading into the final quarter, tries from James Hook and Motu Matu'u put Gloucester in touching distance of the lead and with all the momentum going their way following Jack Clifford's yellow card.
But Gloucester's luck ran out when referee JP Doyle missed an infringement with Gloucester on the charge, after the ball was kicked out of the hands of scrum-half Willi Heinz.
The Cherry and Whites have won just once away from home in the league this year, drawing away to both Exeter Chiefs and Worcester Warriors.
"It’s one of those decisions – I certainly saw it and you hope the referee saw it as well,” Humphreys said.
“In every game decisions go for you and against you. What you’re hoping is that high impact decisions go the right way. In that last couple of minutes… a bounce of the ball and it’s in Henry Purdy’s hands and a try… a couple of decisions didn’t go our way.
“No matter what anybody says, you need a little bit of luck in the game and we just haven’t had it in those big games away from home.
"Winning away from home has been the Achilles heel of Gloucester for the last ten, twelve years, and we are very close.
"We have to find a way to win those games."