In reply to flett53:
I just fitted Petzl bails to my stingers as the fit on Scarpa Jorasses wasn't great, the rumour being the Petzl bails are narrower.
No real difference noticed and they are pretty comparable in shape and size to the original BD bails, but do make the stingers fit closer to the sole. I do also like the way they have no strap attachment at the toe and they seem to work just fine.
Tempted now to check out the grivel option. Word is that BD do a narrow bail, but these are supposed to come as standard on the Stingers...