However once the proper racing had begun, Dibben met his match in Upper Hutt's Rogan Chandler. Chandler was on fire all weekend, winning all three races and forcing Dibben to accept three runner-up finishes on the undulating Waikato track.
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Despite Chandlers strong showing over the weekend, Dibben still sits a comfortable 60 point advantage at the top of the standings.
With points worth more than two race wins up his sleeve, Dibben can perhaps afford to relax over the two rounds (six 600cc class races) that remain – at Manfeild and then Taupo – although that's not really something that's in his nature and he says he will still be pushing hard for race wins at the upcoming events.
"It was a good weekend (at Hampton Downs). Obviously I wanted to be winning the races, but I have still extended my points lead, so I'm happy with that," said Dibben matter-of-factly.
"I am looking forward to the next rounds. I am reasonably familiar with Manfeild and don't usually go too bad there. I love the Taupo track, probably my favourite, because it seems to suit my style.
"I have picked up this branch of the sport remarkably well. It helped going over to Australia and racing a couple of rounds of their 600cc nationals last year. I went over there to see if I could pick up the speed a bit and see if I could be on the pace in this style of racing.
"That experience has certainly paid dividends for me back here in New Zealand," said Dibben, well on course to clinch the national 600cc title at his first attempt.
Dibben said regardless with how this season plays out, he will be moving classes again next year.
"I have already decided that I will be in the (1000cc) superbike class in next season's nationals.
"It should be a good challenge. I have never even ridden a superbike before," he laughed.
So is it optimistic and ambitious to jump up to a 1000cc Suzuki?
"Yes, but it's the same as for me racing the 600 this year. I never really knew whether I would feel comfortable with it to start with. It will just be a time thing to get used to another bike and try to go fast," Dibben said.
Round four is set for Circuit Chris Amon, Manfeild, on the outskirts of Feilding is in three weeks' time, on March 28-29, with the fifth and final round scheduled for Bruce McLaren Motorsport Park near Taupo on April 4-5.