Just to be sure you know what the problem is…
An Okie bushing puts the seal on a new unused area on the driveshaft.
If your vehicle did not have an Okie bushing to start with then it is unlikely the shaft is at fault.
It is more likely that oil is leaking past the outside of your Okie bushing.
Torque tube ID varies greatly from year to year, and an Okie does not always fit the tube like you would like.
You may at least need to put some sealant on the outside of the Okie before installing.
