i have had my pro 5.0 shifter for about 3 months, i bought it new and always thought it was ok, the other day a buddie of mine pulls up and i drive his 95gt, his pro 5.0 springs back when you move it back and forth mine only springs back when i move it to the left, so i took it off and it felt like there was equal tension on both sides but i sent it in to pro 5.0 for a rebuild, i put it bac on and same thing, is there anything in the tranny that also helps the shifter spring back? is my tranny going south?