Jordan Warnock Racing had a testing weekend at Thruxton (29/30 August) during the penultimate weekend of the British GT Championship.The Mike Jordan and Mark Sumpter Porsche 911 GT3-RS suffered from a quick-shifter problem in the free-practice and the qualifying sessions, which was costing them time. However, the John Guest-supported car was further away from the outright pace than it should have been and the team was working hard to try and identify the problem.“I think the flat-shifter problem is probably costing us more time because it’s causing us to think about the gear changes and it is making them slower,” he said. “The car feels really good, but it’s just not quick and we can’t seem to find out why. Nothing feels wrong with it though.”An engine change was needed on the Preci-Spark 911GT3RS of David and Godfrey Jones when it started smoking in free practice. The team changed the unit for the engine used in the Spa 24 hours. Meanwhile, the GT Cup cars of Michael Caine/Peter Chambers and Steve Wood/Stuart Scott qualified without dramas, with Caine/Chambers taking fifth in both sessions and Scott/Wood tenth in each session.Jordan put the John Guest car fourth on the grid for the first race of the weekend, just under a second away from pole in the wet conditions. However, the race was a nightmare for the pair as Jordan struggled for grip in the early stages before being hit from behind by the Embassy Racing Chevrolet Corvette. “I was accelerating out of the corner when I suddenly had another 400 horsepower up my backside,” said Jordan. A spin later in the race flat-spotted a tyre, meaning an extra stop and a tenth place finish.In the first race the Jones' car finished one place ahead of Jordan/Sumpter in ninth, while Chambers/Caine took fifth in GT Cup and Scott/Wood finished eighth.A major change of set-up and a switch of gearbox meant a better car for Sumpter to start the second race from seventh place. Later in the race, two safety car periods gave Jordan hope of catching the leaders. However he was incredibly frustrated by the inexperience of some of the other drivers behind the safety car. The gap in the queue of cars as the lights went green was far too much for him to make up in the ten-lap sprint to the finish.“As the lights went out on the top of the safety car some of the Cup Class cars were 400 yards behind the guys in front. It would have taken a dozen laps to claw back that sort of gap. You learn in the FIA series how to work a safety car period and most of these guys don’t realise what you need to do,” said Jordan. A fighting drive meant the number 33 car was up to fourth by the chequered flag, but it could have been even better. The Jones brothers came home seventh after getting caught out in the pit-stop window during the safety car period.Wood had to complete the second race solo after Scott felt unwell. A great drive took the car to fifth in class, one place behind Chambers/Caine. Chambers was on course for a third place finish until he had a suspension problem on the last lap, which cost them a podium finish.