I put a new Campy pista crank on a track bike and notice a tad of flex in and out when standing on them. I took it off and put it back on and used the ole rubber mallet to pound it back on. It's on, but I still notice a tad of play in and out.
The BB is a 111 ISO spindle so that shouldn't be an issue. My Sugino 75s and early 70s Campy cranks don't have this issue. I actually use shorter JIS spindles with them to accommodate and this is not noticeable. Should I be concerned? The chain alignment looks right too.
Kevin McCaul
Silver Spring MD USA