I installed a Borgeson steering shaft this morning. The quality of the
unit looks like top shelf.

It was an easy install, there was only one way the bottom splines would
line up and there was only one way the top joint would line up.

Unfortunately, my steering wheel is now 90 degrees off center. I did not
read about or see any adjustment on the shaft itself. Can my steering
wheel be straightened with front end adjustments or have I just gotten a
defective steering shaft?

 

just go under and adjust your drag link until its straight again.

 

I put one on about two weeks ago and had the wheel off to the left. I just moved it two splines on the steering box and now it is straight. you should be able to move it on the box.