The R400 class battle, meanwhile, was a cracker, with Patrick Gormley closing down early leader Jack Newland to pass him on the seventh lap in race one. Gormley would go on to finish nine seconds ahead of Newland, with Sarah Reader collecting third in class after overcoming engine problems in qualifying.
Championship debutant Gary Halcrow - who swapped his race-winning Roadsport for a Superlight for the weekend - was 11th overall, just ahead of Reader and Bill Addison. Tony Poole and James Gardiner both suffered off-track moments, Gardiner forced to retire with fluid leaks after his trip through a gravel trap.
There was no chance of Fennymore being allowed to run away with things in race two, however, with de Zille Butler giving chase from the second lap after disposing of Harrington. Ben whittled the leader's advantage down from a second to just two tenths within the space of six laps and then proceeded to try everything he knew to find a way past.
It would be to no avail, though; Fennymore had the answer to everything de Zille Butler could throw at him and, despite committing a couple of forced errors on the last lap, just managed to keep his nose in front. De Zille Butler even smashed his own circuit record on that final tour and closed to 0.037s at the line.
“I put everything into that last lap,” he said after the race, “but it wasn't quite enough.”
Harrington finished a lonely third and Bateman an equally solitary fourth, with Mitcham once again getting the better of Green to take fifth. Payne finished behind Rachel for seventh, ahead of Halcrow, Gardiner and Beaumont. Bill Addison was the final Superlight finisher.
In R400 mechanical problems hobbled Gormley's pace this time, however; he led the class for six laps after catching and passing Newland, but dropped to dead last and handed Jack victory and a slender points lead. Reader took second, with Stuart Smith third ahead of Patrick Maher and the unfortunate Gormley.