Steve Tomasson scored the only goal as Airbus held on to beat visitors Bala.
Mark Jones scored an injury-time equaliser for Afan Lido having trailed to Jack Christopher's 35th-minute goal.
David Brooks was the goal hero as Port talbot saw off Newtown.
The New Saints FC
Prestatyn Town (
Saints swept aside Prestatyn as Greg Draper, Ryan Fraughan twice, and Sam Finley scored, with Jason Price netting the visitors' consolation.
Mark McGregor broke the stalemate four minutes after the break for the hosts and team-mates, Ricky Evans and Michael Thompson then struck before Martin Rose's consolation effort after 90 minutes for Llanelli.
Bangor were 4-0 up before Aberystwyth managed to reply. Chris Jones and Sion Edwards scored inside the first six minutes, before own goals from Stuart Jones and Wyn Thomas compounded the visitors' misery.
Jordan Follows gave Aberystwyth a brief respite in the 24th minute before Edwards completed his hat-trick by the 35th minute and Chris Simm concluded proceedings in the 66th.
Blue Square Bet North
Evo-Stik Division One South & West