When I bought my FZR400, it had been wadded up at Daytona. The front fork was bent really bad. Like maybe a 20 degree bend. We straightened it with a bearing press in about 10 minutes. Every time I put the bike back together, We had to wrestle the front end before I tightened the front axle.
It was stable at top end. Of course, according to calculations a mere 140. And yes it was a fast bike, even wacked, I took a lot of podiums with it.