I remember this.
That link for me is long gone.. Don't miss it.
So besides a trip down memory lane, lol.. I have no help.. I never fixed it.
Some links I have now, and have had in the past I have re-run in radio mobile, using the land cover feature, which I never used before, just to discover now that they are blocked by trees, bush lots.. Using something like ligowave link calculator shows them to be perfect links but doesn't show trees.
Ive worked to move some of these links with either weaker than expected signal or poor performance to other spots.