My rebuild tranny dosen't switch to 3rd gear.Need help
 

Hi everyone.
Last week i thought that i finished my project.
I had my wifes old car 2000 Mazda 626 with 113K miles with broken tranny.
I decide to rebuild it. I bought all parts and kit and book.
I think i did everything correctly.I put it back in the car.
Tranny shifts perfect on the 1st and 2nd gear, but it dosen't go to the 3rd.
Reverse is working fine.
Does anyone have any idea what can can be the problem?
Is this an electric problem maybe?
I tryied tranny shops but they want me to bring the car and charge ofcourse.I rather not to do it yet.
I appreciate any help.