Rod bolts fell out!

Did you get your nuts off first
I would not put loctite on the bolt before putting it in the rod - you would have to torque before it hardens
just torque to spec with the correct lube which most likely was 30 weight EO
do not overtorque
you could locctitethe nuts but were they easy to take off?
if they felt right taking them off you are good to go
you do definitely not want to use arp or other HP bolt without redoing the rods