98 Gt to 97 cobra cluster swap.

Ok so I bought a guage cluster to swap into my 98 Gt cause I was told on misc boards that it was plug and play. Well I got everything in the car and running but heres there catch. The temp guage goes all the way to the right and the fuel guage is all the way to the left while the tach, volt, oil pressure guage work just fine. I thought it was plug and play not plug and get more problem kinda thing lol. I bought it off ebay and the seller has good feedback so I trust that it should work. What do you guys think?