Grimsby's six-game winning streak in the Vanarama National League came to an end after they were held to a 1-1 draw by Guiseley at Blundell Park.Guiseley took the lead five minutes before the break when Ollie Norburn lashed in an excellent effort from 20 yards - the first goal Town had conceded in 484 minutes of league play.But Padraig Amond levelled 18 minutes from time when he supplied a close-range finish to Gregor Robertson's deflected cross - his 17th league goal of the season.Visiting keeper Steven Drench saved well from Omar Bogle as the Mariners endured a frustrating afternoon.ends