Guisborough Town's match at Easington Colliery seemed destined to end goalless, but with only ten minutes remaining Easington sub Jonathan Mould scored with his first touch of the ball.
Mould's second goal came inside the last minute, resulting in Guisborough's second consecutive away defeat.
Guisborough are at home to Chester-le Street tomorrow.
MARSKE United were 4-0 down at Dunston Fed by 38 minutes; scorers Fletcher and Healer (3).
The seasiders pulled two goals back by 12 minutes into the second half; scorers Greg Booth and Darren Sankey.
l United won 2-1 against Pickering in Monday's FA Vase tie and travel to Barwell in Leicester tomorrow for the third round
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