Scott Redding declared himself satisfied with his Jerez testing performance despite finishing outside of the top ten.
The 2008 British GP winner, who became the youngest rider in history to win a world championship Grand Prix when he triumphed at Donington Park last June, clocked a best time of 1.48.418.
That left him 1.1s off the fastest pace set by Julian Simon and a second off the pace of fellow British rider Bradley Smith as he continued to try and adapt to the new 2009 Aprilia 125GP contender.
The 16-year-old has found a confident-inspiring chassis set-up hard to find with the more rigid frame and he told MCN: “I’m pretty happy with the way things have gone, but obviously I need to find a bit more pace. I feel like I’m getting more comfortable with the chassis but this year’s bike is definitely harder to set-up.
"I’ve been having problems with rear tyre endurance because of it and haven’t really been able to find a rear tyre that lost for more than eight or nine laps because the chassis is wearing it too fast.”
Redding’s final test will be in Qatar next week before the first race under floodlights on April 12.
Redding will return to the Middle East where he made a stunning 125GP debut just over a year ago by claiming a debut front row start.