Dani Pedrosa believes Honda's deficit to Yamaha in Mugello MotoGP practice was due to a lack of affinity with the track conditions rather than a major issue.
Yamaha filled the top three positions in practice two in Italy, while Pedrosa was a second off the pace in fifth, behind Nicky Hayden's Ducati.
Heavy rain had hit the area overnight, and MotoGP championship leader Pedrosa believes Yamaha was just better attuned to the "green" track.
"I had not too much grip today. It was hard to get grip from the tyres, especially on the rear, and also it was a little inconsistent at some corners," he said. "It was difficult to have a feeling. The track was maybe not quite perfect after all the rain. I'm just trying to work a little now to get the best setting for tomorrow."
Pedrosa's teammate Marc Marquez had a heavy crash in the afternoon session, leaping from his bike at high speed after losing control under braking. Although he had to be taken away by stretcher, Marquez was not seriously injured, escaping with a swollen jaw but no broken bones.