Nomads moved seven points clear at the summit after a single second-half goal was enough to see off hosts Airbus.
U16 star Jo Jasper got the call up for the U18s, came off the bench and scored the winning goal on 56 minutes, Alfie Bennett with the assist.
Four straight wins and seven without defeat for third-place Gresford, who were good value for their victory at Maes Tegid.
Having won their previous two matches 10-0 and 14-2, Saturday’s success was not as emphatic for the Colliers, but it was another three points, Jonnie Vernon and Rhys Evans with the first half goals.
Jack Casey and Riley Williamson were on target for Mynydd Isa on a winning journey to Parc Gwydir.
Lennon Kelly salvaged a point for NFA with an equaliser 10 minutes into added time.
Niall McGuinness gave the visitors a 17th minute lead, but Connor John levelled after 36.
In the second half, Joseff Baker-Hughes made it 2-1 Bangor on 53, David Wallis restored parity after 63, but John nudged the Citizens in front again with 70 on the clock.
That looked like it would be enough for the hosts before Kelly provided that late, late twist.
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