Monster Yamaha MotoGP duo Maverick Vinales ans Valentino Rossi were a bit 'meh' after a day testing a new-spec M1 engine and carbon swingarm at Misano.

Neither rider got the breakthrough they were after with Vinales remaining hugely concerned about the lack of grip he is still suffering on a slippery surface.

"We need to keep working, it's not the step I think we could make. "It's been a difficult day. I struggled a little bit to find the grip on the track," said the Spaniard, who was only three-tenths slower than timesheet topper Fabio Quartararo.

Today, I struggle a lot, I didn't feel comfortable on the bike. Tomorrow we need to find another set-up or other different things to improve the bike."

Old warhorse Rossi was more positive than Vinales but warned that the upgrades for next year are still not the step forward required to be competitive.

"It was a good test because I was quite strong all the day. We start with the 2020 bike, which have some different things but after we concentrate on this racebike," said Rossi.

"We try the new engine, but this is for next year. We are in a good way but this is for next year. Still the step is not as big as we need, but is in the right direction."