Hmm.. Unless something changed recently... the classic score is capped at 850. The only excpetions are the industry option scores which go to 900. They are probabaly using the bank installment option and don't realize there is a difference.
If I remember the info you posted elsewhere, the four industry options are (excuse me if I don't get the titles exactly right):
Auto Industry Option Bankcard Bank Installment Personal Finance
I know the Auto goes to 900, and it appears you're saying the Bank Installment goes to 900 also. Do the Bankcard and/or Personal Finance option scores go to 900?