So, I've had this 21 years old fast trainer who was was sitting on 6 stars the whole season. I had a LOT of green packs, so I just spent it on him and bumped him to 8* in an hour. Now when I spend more green packs on him, he barely gains new +1%s. Is that because going from 8 to 9 stars is ridicioulys hard? If so, would keeping him on 8 star this season and upping him back up to 8 next season be easier, or did he just reach his *personal* cap? Thanks.