The hosts enjoyed a flying start through Stuart Fleetwood’s ninth goal of the campaign, only to switch off badly in the latter stages as Andrew Parry pulled Port level.
Some strong words from the boss during the break saw an immediate improvement though as Scott Rendell turned in JJ O’Donnell’s cross on 47 minutes and then coolly converted a penalty four minutes later.
Buckle said: “I think we had a lapse in concentration after going ahead so early. Maybe we thought it was going to be easy, I don’t know, we’ve had a bit of a discussion abut that.
“Now we’ve got the first goal, we’ve got to go and try to get the second one. We started brilliantly, got on the front foot and I didn’t see any danger really.
“Then we got caught with a sucker punch, it made life difficult going in at 1-1 but we stuck with it and the second half performance was electric from the first kick.
“I asked them to just go and step on. I said if you step on, get tighter in midfield, get some tackles in, get crosses into the box, this group of fans will get right behind you.
“I feel we did that and it could have been a lot more.”
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