49. I think you have it right. I,ve never used that o-sized set but it stands to reason if the standard size float the o-sized will too. If it,s just a little loose in the sxle I would just lock it in with the lock pin. You could use some Permatex shaft & bearing lock but you would have to grease it right away because some is going to get on the bushings. That,s just my $.02.
