Hi all, I have just joined, here's my dilemma, I did what everyone said not to: put fill in the low spot/half of the 18' circle, now I need to set the posts. Can I correct my mistake by customizing the heights of the paving blocks placed under the legs, meaning that I will go all the way down to the original soil at the lowest point, so that the paving block is supported by original soil. Our soil is heavy clay. This means that the liner itself will be on the area that is part fill. I don't know how much of the weight/force is done by the legs versus the liner. The high to low was a matter of 6" difference.