I have an versacamm VS-640, the printhead have any dead spot, I want to change, but the cost $1300, so I hold this change. Yesterday I buy Epson B-310 printer for $450, the head is similar to my VS-640, I read some tread here that Roland head is overpriced Epson Head, is it possible that this little epson printer have same printhead to versacam VS-640? Is it possible to replace vs 640 printhead with this little epson printer head.