Using LinqSql, stored procedure returns datatype image problem

Question

Hello! I´ve got a problem when using LINQ to execute a stored procedure and return its values. One of the column that the stored procedure returns is of datatype image and contains a pdf in binary form.(this because the database is deployed on sql server 2000, otherwised i would choose a blob)

When including the stored procedure in my linq class its generates that my pdf columns is datatype int in the designer class.

I´ve work around the problem and manually changed the datatype in representation of the stored procedure in the designer class. But when adding/removing items in the linq class the designer file re-generates and my changes are lost.

Are there any better solution for my problem??