Longside travelled to play Deveronside on Saturday in the PMAC group Superleague.
Duncan did well to send Campbell clear but the home defence got back quickly to clear the danger.
Minutes later Paterson got on the end of a Whyte cross but he send his header wide.
A King free kick found Flett but he headed the ball straight at Pennet. A Thompson corner was headed clear by Norris.
Midway through the first half Norris fed the ball through to Campbell and his 25-yard strike went narrowly wide with Tait at full stretch.
Smith earned a corner for Deveronside, Thompson’s kick was punched clear by Pennet but only as far as Scott Davidson but he fired his shot well over the bar.
Zander Davidson went clear on the left at the start of the second half and his shot was blocked before it eventually fell for Duncan but his shot was brilliantly saved by Tait.
The home side took the lead in 49 minutes when the Longside defence failed to get the ball clear, Pennet made a good save to deny Smith but Liam Kerr followed up to score.
A 35-yard free kick from McLeay was scrambled clear for a corner, Thompson’s kick was bouncing about in the danger area before Gavin Murdo saw his shot come back off the post before being cleared.
A Beddie cross was flicked on by Cardno for Duncan but his shot was deflected for a corner which came to nothing.
King weaved his way into the box and his cross was bravely saved by Pennet.
The visitors equalised in 65 minutes when Derek Paterson picked up the ball 25 yards out before crashing it into the roof of the net.
Two minutes later they took the lead when Norris went up with Tait for a high ball it broke to Paul Campbell and he volleyed the ball home.
Longside survived an amazing goalmouth scramble which saw the ball hit the bar, cleared off the line and Pennet made two vital blocks.
A cross from Legge was headed wide by Smith. Cardno then made a surging run through the home defence before shooting over from 15 yards.
The visitors had a fair bit of defending to do in the closing minutes but held on for victory and a vital three points.
This was another hard fought three points for Longside who again showed their character after going a goal down before coming back to win.
Derek Paterson capped his fine debut with a superb goal and Grant Pennet was called on quite a few times and made some excellent saves.
Longside are again on Superleague duty this week away to Culte. Kick-off is at 2pm.
LONGSIDE: Pennet, Beddie, S.Davidson, Norris, Donaldson, Paterson, Whyte, Cardno, Duncan, Campbell and A.Davidson.
Subs: Little, Weir, N.Davidson, Porter and Marchi.