Leaders Folkestone beat Chichester to move six points clear at the Isthmian Premier summit on Saturday.
With second-placed Brentwood having drawn 3-3 against fellow play-off occupants Aveley on Friday evening, Jake Hutchinson put Jay Saunders’ side 1-0 ahead from a clearance by goalkeeper Ted Collins in front of a crowd of 1,092 at Cheriton Road.
Fellow forward Joe Pigott got an Invicta second with 10 minutes to play before substitute Ronnie Dolan bagged a stunning stoppage-time third as it finished 3-0 to Folkestone.
Defender Sam Smith earned the game’s only goal for Dartford in a 1-0 win against Dulwich Hamlet to move the Darts up to third.
Manager Ryan Maxwell oversaw a first Isthmian Premier victory at the Welling helm, helping his new team beat Cheshunt 3-1 at home.
Midfielder Sonny Black put the Wings into a half-time advantage and, although the visitors equalised through a second-half penalty, winger Troy Howard found the net with four minutes left.
And substitute Femi Akinwande made sure of the points in stoppage time.
Cray Valley secured a 1-0 victory at Carshalton to move three points behind them and ease their own relegation fears.
Striker Rowan Liburd got the only goal in the 71st minute.
Top scorer Tope Fadahunsi’s goal proved in vain during play-off occupants Chatham’s 4-1 home loss against St Albans.
Midfielder Billy Munday bagged a brace in a 2-2 Isthmian Premier draw at Whitehawk for Ramsgate, who saw defender Raphe Brown dismissed for a second bookable offence with 85 minutes played.
Cray Wanderers played out a 1-1 draw at Canvey Island.
Striker Mike Salako, formerly of Sittingbourne and Herne Bay, put the hosts in front but Quade Taylor promptly equalised.
Captain Tom Bonner was sent off in the final
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