I think you can run it without the clip, but it will cause damage after a period of time.
Did you make sure to clean out any and all metal debris from the chipped gear, and remaining broken sprag clip? change the oil? If you still have metal particles it will start to do more damage.
the gears may be loose if you misplaced any shims, if they fell out during investigation and you didn't notice. there shouldn't be any play, this is hard to tell when you don't have the cover on, it helps hold them in.