Keeper Brock survived his first test early on as he caught a long, hanging cross from Clark although he was under no pressure.
Maddison's deflected shot gave the visitors a corner on five minutes but they committed a foul as the ball was flighted in.
Foster miscued from the edge of the box a minute later after doing well to turn teenage defender McGurk.
A mistake by Ayres let in Mellanby on 10 minutes but the striker shot wide with Brock advancing.
Henriksen had a strike deflected away from goal on 18 minutes after Foster's clever assist from the right.
Hinton headed Ducros' resulting corner towards the top corner but Collett claimed easily.
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