3 crits out of twenty is not bad.
A 51% crit chance means you have a 51% chance each try not over all.
The ring resets each try the previous ones have nothing to do with the current try.
If your thinking your supposed to get 50 out of 100 tries you are wrong.
Probability is per craft not total numbers of items.
I do not know what I want I must consult with Floon who will tell me.Turbine reduced aggro range.Noticed too many players run away from mobs.Wonder how many were escaping unwanted XP gain.