Farthingstone got their first victory of the season as Sam Bird and Richard Marsh won a vital point on the 18th hole in a 3-2 home success against Brampton Heath.
Ian Donald and Adam Smith (6&4) and Simon Nightingale and David Summerfield (6&5) both enjoyed big home wins.
But with points difference possibly being crucial in a group where no team has won away, Brampton took both the last two ties on the 17th hole.
Kettering B have set a target of six points at the summit of Group C after completing their campaign with a 3-2 home success against Whittlebury Park.
The visitors took games one and three, but Kettering veteran Mick Reed combined with Graham Jones to keep the match alive on the 18th, before in-form Lee Smith and Keith Althorpe (5&4) and Jim Campbell and Dave Draper (3&2) secured the win.
Despite being the only team with an away victory, Kettering’s relatively poor points difference means they will probably be overtaken if Whittlebury, Daventry or Peterborough Milton can match their record of three wins from four outings.
Staverton Park moved above Northants County to the top of the Group D table after a 5-0 home whitewash of Overstone Park.
Michael Franklin and Paul Hammond (6&4), Stuart Trigwell and Andrew Swain (4&3) and Russell Brown and Michael Christie (7&6) confirmed the victory, before two wins on the closing hole completed the perfect day.
Staverton and County, who have both recorded one home win and one away win, will meet in the last match of the season.