Cal Crutchlow and James Toseland are confident Yamaha has got to the bottom of its chatter woes following the last-minute introduction of '09-specification parts to the revised R1.

Both Crutchlow and Toseland were off the pace during pre-season testing at Phillip Island last week, the pair identifying problems with chatter and prompting a re-think by the manufacturer during the week.

As such, the lighter carbon fuel tank introduced to the 2010 model was replaced by last year's heavier version, a move that immediately seemed to quell the problems and allowed the riders to climb the timesheets.

Of the two, Crutchlow was the faster rider and although he admits tenth on the timesheets doesn't look immediately impressive, he maintains the bike is showing good consistency now.

"I think we've worked hard and got rid of the chatter problem," he said. "The 2009 parts that we've used seem to have helped us in that way. The tank and the seat unit seemed to have stopped the chatter now. If you look at our times, although we're not initially fastest straight away we've got consistency across the sessions.

"We've got some more areas to work on and I'm looking forward to making the bike even better tomorrow. We've got a good direction to work in, it was just a little unfortunate that the track temperature was so hot today. Even so we were still doing the same times as Ben's race pace from last year. Hopefully it will cool off over the next couple of days and work better for us."

Toseland, meanwhile, could only manage 13th quickest after hurting his hand in a fall midway through the provisional qualifying session.

"Unfortunately had a big crash today coming out of the penultimate corner which didn't help things. I did go back out on the other bike but had a pain in my hand so came in as I wanted to make sure it was ok.

"We're definitely making improvements, we've just had a lot to do in one day to work through the package. We're only a bit over a second off pole now so we'll focus down and keep moving forward tomorrow."

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