A couple of things...
1) If the categories really are a percentage chance, Lucky Charm 4 may be bugged, because by the data above it adds up to 120% (I assume it's actually an equal chance of any the 6 categories, or the 1st 5 loaded [which would presumably dump "Precious"]).
2) Considering the probability of hitting a "Lucky Find" in conjunction with the category probabilities (7%/9% * category probability), Lucky Charm 5 seems better than Lucky Charm 6 with a net 0.7% chance of each category (Scroll/Arrow/T_ST_SecGearNormal/T_ST_ArmorNormal/T_ST_WeaponNormal/GoldBig/T_ST_SecGearMagic/T_ST_ArmorMagic/T_ST_WeaponMagic/Precious) vs Lucky Charm 6's somewhat more varied probabilities (1.35%/1.35%/0.90%/0.90%/0.90%/1.35%/0.45%/0.45%/0.45%/1.35%), meaning that you get 2 less items per 100 checks, but 2(.1) of them should be Magic rather 1(.35).
