The Visitor Event Guide/Discussion.

my gloves were lucky with 5 dex 6 luk then i used a dex one and they stayed the same. my shoes were 5 dex 6 luk then i used a dex one and they changed

That's what I'm trying to say, you're making it 50/50 so it will choose either DEX look or LUK look randomly, and your gloves chose LUK, so it remained the same, but your shoes chose DEX instead.