yes...i always argue with Baba about upgrading juvelry.
I always tell him that is very nice idea from KO to make that much drops of STR juvelry, and so rare drops of DEX, MP or HP juvelry.
And, that he (and all other warriors/bp's) are very happy with that situation. I spent more money (before couple of months) to make neckless (watch it: neckless not earing or belt) DEX +10, then Baba who was making 2 STR earings.
That is one more problem in game. Too much drops of STR juvelry, and so rare or others.