Isthmian Premier leaders Folkestone showed their class in a thumping away win against Lewes.
Jay Saunders’ side won 5-0 at the Dripping Pan to maintain their 14-point cushion over second-placed Aveley.
Joel Odeniran gave Invicta a half-time lead and the visitors pulled clear in the second half thanks to Jake Hutchinson’s double, a Joe Pigott penalty and an injury-time effort from loanee Jonathan Lawson.
Chatham slipped to a third successive league defeat after losing a 2-0 lead at home to Chichester.
Kian Moynes and Junior Dixon put Chats in charge but City stunned the hosts with three goals in five minutes from Miles Obodo (2) and Robert Hutchings.
Kevin Hake’s side stay fourth in the table after the 3-2 reverse.
Ramsgate’s five-match winning streak in the league ended at Cray Wanderers – but they remain unbeaten this year thanks to an injury-time free-kick from Alfie Paxman.
Donvieve Jones was sent off for a Rams side who trailed to an Alex Hernandez goal in the 77th minute.
But the visitors showed their resilience as Paxman made it 1-1 in the sixth minute of added time.
The Wands drop to seventh, while Rams stay ninth.
Cray Valley remain in the relegation zone on goal difference after losing 3-1 at third-placed Brentwood.
Kenny Aileru put the Millers in front midway through the first half but Town rallied with goals from Daniel Ogunleye, Kymani Thomas and Louie Johnson.
Dartford dropped out of the play-off places after their game at Cheshunt was postponed.
Welling suffered a second call-off in five days, with their home match against Cashalton a victim of the weather.
Just two matches involving Kent teams in Isthmian South East survived the weekend rain.
Goals from Sam Blackman and player-manager Ben Greenhalgh gave Margate a 2-0 derby success at home to Sheppey United.
Victory made it back-to-back wins for Greenhalgh’s seventh-placed side, while the Ites stay 15th.
Sevenoaks won 3-1 at VCD thanks to Kevin Diomande, Rodney Eruotor and a late clincher from Sam Itauma, after Reece Deakin replied. Oaks are up to 11th, with the Vickers four points from safety in 20th.
