MotoGP World Championship leader Casey Stoner suffered a lowside fall on his way to third place behind the Fiat Yamahas in Friday practice at Catalunya.
Stoner tumbled from his Ducati with 15 minutes of the hour remaining, but returned on his spare bike to set a best lap time 0.598sec behind Valentino Rossi.
"We didn't have such a good feeling in the beginning,” admitted Stoner, winner at Catalunya during his 2007 world championship season.
“We're trying a few different things on one of the bikes and it's working really well apart from in two areas. One is when I'm at full lean on the way into the corner, it feels a bit vague and wants to push me a metre or so wide. When I'm on the gas again it turns really well.
“The other point is that we're not getting much traction, but we're getting loads of corner speed and it's turning really well. It's a case of working to find a balance and unfortunately we lost a bit of time at the end because I tipped off it in the hairpin at the end of the back straight.
“Basically I'd had a couple of moments before that so I was being a little careful - probably too careful because I didn't push the front hard enough in that corner and it went a little light and tucked.
“Anyway, we've ended up with some reasonably competitive lap times and I'm confident we can go much faster tomorrow. I'm happy because we know what we're capable of and it's just a matter of getting it done now."