Yamaha Factory Racing's Jorge Lorenzo encountered a number of issues as he attempted to improve his race pace on the final day of the Sepang test.

The Mallorcan rider finished third fastest on the YZR-M1 behind Marc Marquez and team-mate Valentino Rossi.

Lorenzo had concentrated on tweaking the electronics on the opening two days of the test after changes due to the 20-litre fuel regulation unsettled the handling of his Yamaha.

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His team alleviated the issue on Wednesday and Lorenzo used the final day of the shakedown to focus on his pace over a race duration.

"I think we improved a lot the lap time from yesterday but I didn't make a perfect lap. Maybe with softer tyres we could make a 1m 59.5 or a 1m 59.6," he said.

"The goal was not to improve the one lap time but to improve the race pace. When we tried a race simulation in hot conditions we found some problems where we didn't expect them, so the pace wasn't as good as we wanted.

"We had more chattering than normal and more problems in the braking. Our setting is good in the beginning but at this time of the day at 4.20pm it is not ready to be faster at this track.

"We will see if we can improve at this track at the next test and then another track will be completely different. We are focused at this track to improve the bike in hot conditions to be faster," Lorenzo added.

"I was disappointed with our race pace because I didn't expect so many problems but sometimes you feel great and make a very good simulation and next time you have some problems."

Lorenzo was much happier with improvements to the electronics, which had affected the handling of the M1 after changes were made to accommodate the new fuel regulations.

"We improved a lot with the electronics and my bike is a lot smoother than the first day, so I am much happier. It's quite similar to last year, but not better," he said.

"Sepang is not normally a Yamaha track and we need to see what happens at another track."

Lorenzo's day three time of 1m 59.866s was 0.333s behind Marc Marquez's new record lap at Sepang.