......in Porsche Open Richard Chamberlain was unstoppable at Snetterton on Sunday (10 April) as he scored a brace of victories as the Michelin Porsche Open Series kicked off. In the classes, Paul Hogan and Mark Jackson also completed Norfolk doubles, while Charles Winterhalder and Mark Harris shared class four spoils.Qualifying"Brake balance wrong, understeer in the slow stuff and oversteer in the quick corners," reported Chamberlain to his pit crew part way through the qualifying session. They set to and fixed the problems to allow their driver to set the pole time on the very last lap of the session.This bumped Rupert Lewin down to second, but he was just thankful to be on the grid after damaging the front end of his GT2-R in testing on Thursday. "The guys have preformed miracles to get it ready again," said Lewin. Race oneChamberlain immediately powered into the lead from the start of the first race, with Lewin chasing hard and staying within reach until a broken gear linkage sent the 996GT2-R coasting into the pits.This left Paul Howells (993 GT2) in a comfortable second place while the 911GT3 RS pair of Gerry Harrison and Keith Butcher fought out an entertaining early battle for what was now third position.Sadly the final few laps proved very difficult for all the drivers as Steve Burtt (993RSR) coated much of the bottom part of the circuit with oil when his engine blew up spectacularly. "The oil made things very tricky indeed," admitted Chamberlain, who was relieved to bring his flame-spitting 935 safely to the flag.An impressive performance from class three winner Wayne Jackson (944 Turbo) netted fifth overall, eight seconds ahead of class two winner Paul Hogan (996 Turbo). Meanwhile, Charles Winterhalder emerged to clinch class four in his 944.Results - race one: 1 Richard Chamberlain (935) 17 laps in 20m15.951s (98.24mph); 2 Paul Howells (993 GT2) 16 laps: 3 Gerry Harrison (911 GT3RS); 4 Keith Butcher (911 GT3RS); 5 Wayne Jackson (944 Turbo); 6 Paul Hogan (996 Turbo); 7 Mark Albutt (911 GT3 Cup); 8 Charles Winterhalder (944); 9 Mark Harris (944); 10 Paul Herbert (914-6). Class winners: Chamberlain; Hogan; Jackson; Winterhalder. Fastest lap: Chamberlain 1m08.917s (101.96mph).Race twoIn the second race Chamberlain scampered off into the distance while Lewin, who had to start from the back of the grid, worked his way through the field in style.Lewin's charging progress was briefly halted as Howells put up some resistance until the silver GT2-R went by on the lap six to take a deserved second place. "I'm happy with my performance today and I'm looking forward to tackling Richard on the tighter tracks," said Lewin afterwards.Behind third-placed Howells, Harrison and Butcher renewed their earlier battle with the Harrison just holding on to fourth, while Jackson again impressed with a strong drive to class honours and sixth overall.Seventh – and another class victory - went to Hogan after an early spin took the edge from Mark Albutt's challenge in his 911GT3 Cup car. Mark Harris (944) triumphed in class four this time around.Results - race two: 1 Chamberlain 17 laps in 20m03.581s (99.25mph); 2 Rupert Lewin (996GT2-R) +1m 03.023s; 3 Howells; 4 Harrison; 5 Butcher; 6 Jackson; 7 Hogan; 8 Albutt; 9 Harris. Class winners: Chamberlain; Hogan; Jackson; Harris. Fastest lap: Chamberlain 1m09.429s (101.21mph).The next race in the series is at Castle Combe on Bank Holiday Monday, 2 May.