As much as I hate to say it Rob
I had heaps of problems with my supposedly you beut bottom tailgate .
The sides had to be square up lots, then still had to stuff around with the bottom hinges to get the alignment right..
After all that I still have the problem of the excessive gap in the Middle at the bottom, the same as Agro ,big enough to put your. Fingers through.
Hope yours is a good one and you don't have any dramas,just spend plenty of time on the trial fitting..