After being caught and passed by team-mate Jorge Lorenzo in Sunday's Portuguese Grand Prix, Valentino Rossi needs improvements if he is to fight for victory on his Yamaha farewell in this weekend's Valencia season finale.
Rossi led for twelve laps at Estoril, but after being overtaken by Lorenzo the Italian was left almost nine seconds behind his Fiat Yamaha team-mate at the chequered flag.
A total lack of dry practice time meant set-up was a gamble, but Rossi still feels he'll need to find something if he is to end his seven-year Yamaha career on the top step of the podium.
"For the dry we started blind so I had to try to take some risks at the beginning because the setting was ok, but it was not enough because when Jorge got into his rhythm he was faster than me," said Rossi.
"I had no way to fight with him. I tried to stay with him but he was too fast.
"Anyway second place is positive for my championship because I am back in third place and I'm not so far from Dani Pedrosa in second.
"I'm happy to have improved the setting of the bike, but we are still not strong enough so we will try to improve for Valencia for a final win with Yamaha," he warned.
"We got a very good result, but unfortunately when you are so very close to the victory it's hard to not get there," admitted team manager Davide Brivio.
"Anyway we took a positive second position and we learned a lot today about out setting for the final race. It was a very positive day for Yamaha too because we took the Triple Crown again, well done to everyone."
With Casey Stoner crashing out, Rossi is up to third in the world championship, 19 points behind Honda's Dani Pedrosa.
Rossi will make his Ducati debut in the post-race Valencia test, which takes place on Tuesday and Wednesday.