As Russel said maybe you could do it yourself, it is not that hard, I have done a couple for my own personal use, so if i buggered them up i only had myself to blame.
https://www.lifepixel.com/tutorials/...rials/canon-5d
I know it was a Canon 5D that i did but the sequence of steps is pretty much the same, and they actully worked out fine
Leon