Thistle assistant boss Martin Crawford has praised the players for showing character to see off Shotts in the Macron Scottish Cup third round clash.
The Largs management were far from happy after the goalless first half display with rookie keeper Danny Farrell, signed just 24 hours beforehand from Morton, being called into action, with chances at either end.
A heart to heart with the players at the interval resulted in a vast improvement with impressive strikes from Laurie McMaster, Kevin Struthers, Mark Millar and Joe Knowles to see Largs into the fourth round draw of the national competition.
Thistle are next hosting Kirkintilloch Rob Roy on Saturday in a 2pm kick-off in the Premier Division on Saturday.
Crawford said: "Last Saturday, we weren't really at it in the first half, everyone knows that, and we had a good chat at half-time with the players.
"We told them that they had to show something as they had not really turned up,
"Luckily they responded and were much better."
Indeed, Farrell had to be drafted in on loan after a goalkeeping crisis with both keepers Blair Cousar and Sean Graham injured.
It looks like Farrell could remain in place, while Ben Black will return after heading over to Dublin for a family commitment.
Crawford said: "For a young keeper, I thought Danny gave a good account of himself on Saturday, and he is a young fella too, only 19.
"We gave Blair Cousar a fitness test but he was struggling, and Sean Graham has a shoulder injury which is keeping him out."
Largs stepped up to the plate in a more confident second half, and Crawford said: "I was pleased with the nature of the goals. I know Shotts had a man sent off but playing opposition from lower leagues can be a bit of a banana skin 
"You always get one or two who pop up in competitions that somehow get through. The first half we weren't happy, and the players know that, and showed a response.
"It is back to league duties this weekend and every game is a new challenge.
"We have been in great form at Barrfields in the league but you cannot take anything as a given, and every team will give you a game in this league and you have to go out and earn your rewards.
"We would have taken this league position (4th) at the start of the season, but we are not in this to survive, we want to give a really good account of ourselves and are hoping to finish in the top half of the table.
"Rob Roy may be sitting in twelfth position in the Premier League but we are wise enough that we know we have to prepare well for every game, and give our all.
"We have put a good run of results together and we deserve to get something out of the season but it is vital that we have to maintain our standards."
And Thistle's recent signing Joe Knowles sealed his fourth goal of the season.
Crawford said: "Joe works hard at training and he has some great strengths. We are trying to get Joe in the best position to take advantage of these strengths and he took his goal well on Saturday."

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And Largs have a new signing in their ranks with the return of Iain Fisher who made it on to the substitutes' bench against Shotts.
He offers valuable experience having won the Scottish Cup with Beith in 2016.
Crawford said: "Iain has been at training in recent weeks and has now signed.
"We now have good competition for the positions in our squad, and hopefully Ian has sorted out what he wanted to when he lift, and will be firing in all cylinders for us."