Well my Steelix has a mental disorder but that's not the point kthxbai.
I've been EV training for his Special Defense on Leafgreen. As recommended I am battling Tentacool and Tentacruel at Kindle Road. I know I've battled a TON of them for it takes a TON of them for Steelix to level up. (He's in his seventies)
When he does level up, his SP Defense only goes up by 1. Something must be wrong right?