gta 4 to gta 5 wheels

I'm trying to convert a gta 4 wheel to gta 5. I successfully converted the wheel and tire to gta 5 format. I open the car model in z3 unlinked the [wheel_lf] from the model. then dismissed the [wheel_lf] I sized the new wheel to the old one and positioned it on the car. I converted the [wheel_lf] and compounded the new wheel into it. I relinked the [wheel_lf] back to the main model chassis. Then is reset the wheel axis to center and the chassis dummy axis to world. everything looks great, I export it and load into openiv but when I view the _hi.ytf in openiv no wheels are visable at any position. load the game and the car has no wheels. it drives like there are wheels but they are not visible. WHAT AM I DOING WRONG????