Any experts in here?
Tried fitting a replacement standard 6'x5' panel yesterday, unsuccessfully.

Upon measuring the distance between the two concrete retaining posts, I've discovered the gap is the correct 72" at the base, but only 71" at the top.
I can only presume the ground where the concrete post is laid has moved and settled over the years, and is now tilting inwards.
Now next door has a mighty powerful jacking device that I can place between the two posts to try and 'ease' the leaning one outwards by an inch at the top, but what is likely to happen, as it appears to be well re-inforced in the ground, with no visible movement whatsoever when pushed.
Is it likely to bend, or will it simply crack and/or explode?
Only other alternative is to either jack hammer it out and install another one, which I really can't be arsed doing, or cut the fence panel to fit.
What you reckon?
Niick. PLEASE don't reply with you usual gormless non witty to me comments, thank you.