by rosebery »
Mon May 26, 2008 12:31 am
Either the post has rotted at ground level or the ground has shrunk away from the concrete so that the concrete itself is "wobbling".
If it's the first then your only solution is the one I suspect you don't really want to hear. Dig it all out and install a new one.
If it's the second you could widen the gap around the existing concrete hole and pour in some more. But that's much less than optimal and the solution remains dig it out and start again.
Cheers