Honda's Andrea Dovizioso admitted he was struggling for answers after ending Friday practice at Jerez off the pace.
While his teammates Casey Stoner and Dani Pedrosa topped a session apiece, Dovizioso was only sixth in the morning and then crashed, before slumping to 12th in practice two.
"It was a difficult day," said Dovizioso. "This morning I crashed on the very last lap because I lost the front, without any warning at Turn 11. The crash in itself was not too bad but then the wind in the afternoon made things worse.
"I think the second practice suffered due to these things put together and as a result I lost the feeling with the front."
Dovizioso, who has struggled to match his two teammates' searing pace throughout the winter and the opening race weekend in Qatar, said all he could do was keep pushing to find solutions to his problems.
"I couldn't ride as I am able to do and it's not a nice feeling but it's useless to complain, we have to continue working," he said. "I hope tomorrow there will be less wind so that we can focus on the setup of my RC212V."