Well I've finally derestricted my 02 curvey after having it a week. I couldn't handle it any more.
I have the modified slides and if anyone needs them to restrict their curvey they are available. I understand Suzuki charge around £100 to do the 33BHP restriction and I do have the original certificate as it was done by Suzuki. Obviously if you did the restriction yourself it would have to be taken in and certified to 33BHP.
I used the web link below to derestrict my bike because I had the original slides. The guidelines were easy enough to follow and it's in the section at the bottom. You simply do the reverse to restrict it. Let me know if you need them and how much they're worth to you.
http://www.sv650.org/sv_faq.htm