would you bye a new or a recondition gear box as mine is not going in to gear that well not slipping out of gear but some times just stiff in going in to gear so what to do?
Personally I think reconditioned boxes are generally better made than OEM ones. They are hand assembled and the quality checks are usually better as long as you use a professional gearbox specialist to do the work.
You might even be able to get your existing box fixed rather than replaced but a swap out is generally the common way this is done.