Another question about this topic.
I've got a very good fast trainer, ML-AML. At the begin of the season he was a 5 stars and his improvemement were about x3 times (+90,+60,+30 more or less). Now he reached the 7th star but his impromements dropped down... now its a 1.5x so I can't consider him a fast trainer anymore.
Did he lost forever his ability?
thanx
LDB