The score right on half time gave the Priorymen a 10-11 lead, but it proved to be the spur that West needed with the home side running in five tries in the second half.
West began the game with a reshuffled back division after centre Peter Youll cried off with illness. Eldon Myers returned to the centre with Joe Willis on the wing and Paul Moss coming on to the bench and going on to have a big influence in the second half.
We got off to the best possible start when prop Adam Coates finished off as forwards driver after just five minutes. Southern's conversion was wide and with West failing to build on the early score Guisborough forced their way back into the game.
Pollock stroked over two long range penalties to give them a one point lead before Sam Miller powered his way over after 38 minutes.
Southern was again wide but we attacked from the restart - looking odds on to make the most of an overlap in the visiting 22 only for Pollock to gamble and collect to run the length of the pitch to give his side that surprise half time lead.
We had lost Eldon Myers to a hamstring strain with Paul Moss replacing him in the centre. He delivered an superb offloads for Greg Edwards to go over under the posts just two minutes after the restart.
Southern converted and at last we were up and running with some powerful rugby forcing the visitors back.
Moss himself got the next score - using his strength to barge over. That was closely followed by a sniping try from Carl Miller who managed to dive under a pile of bodies to touchdown (above) as the packs battled it out on the line.
With the score at 29-11 the visitors' resolve had disappeared with first Rob Thorn and then Adam Coates taking their opportunities to add to the score.
West: Luke Mallinson, Rob Thorn, Eldon Myers, Greg Edwards, Joe Willis, Zac Southern, Ryan Painter, Ross Wood, Andrew Rollins, Adam Coates, Joe Rafferty, Dan Boatman (capt), Carl Miller, Lee Maddison, Sam Miller.
Reps (all used): Anth Carr, Aaron Myers, Paul Moss.
Tries: Coates (2), S. Miller, C. Miller, Edwards, Moss, Thorn.
Cons: Southern (3)
Guisborough: Christian Pollock, Charlie Stockeld, Alex Ruff, Matthew Robinson, Mark Ferguson, Will Muir, Tony Conway, Andrew Milne, Matthew Storey, Rob Berriman, Michael Henderson, Rob Leggott (Capt), Oliver Taggart, Oliver Muir, Lloyd Russell.
Changes: Sam Whyman, Jonny Wills, Gareth Lodge.
Pens: Pollock (2)
Referee: Matt Dunn Durham Society