sterring wheel centering

Yes, the steering gear should be in the middle of it's travel lock to lock.
yeah I think Ive been through it:) Had the whole front end off the car (K frame and bars) plus re installed a rebuilt steering box...youd be surprised how much you can do at home really...you can get it driveable to an alignment shop anyway ...and Id bet some would say you can get it perfect without a shop.