Ben Spies is not sure whether the trapped nerve in his neck that blighted his Brno weekend will continue to be a problem at this weekend's Red Bull Grand Prix at Indianapolis.
The Yamaha rider complained of going for laps on end without any feeling in his left arm in the Czech Republic, and hopes that the situation will have improved when he takes to the track for practice on Friday.
"It's one of those frustrating things, the not knowing [whether it will be a factor during the weekend], Spies said. "Certainly we did everything we could in the week off and it's definitely [feeling] better.
"Coming into a weekend when you're not 100 percent fit is not ideal, but it's not going to stop us doing our job. We did it Brno when it wasn't 100 percent. I just can't say where it's at right now. We'll just get on the bike and see how it goes."
Spies rode through the pain barrier at Brno to finish fifth – right behind his MotoGP champion teammate Jorge Lorenzo. He has no idea whether it will prevent him from matching his achievement of finishing second from pole position at Indianapolis last year.
"Right now I just don't have the confidence to say whether it will be a problem or not. I'll just ride like I did at Brno and do what I can," he added.