I ran into problem in the Heritage Park Observatory: the building was sinking. It had dropped enough that I had to park the telescope "just so" get it to clear the roof. I finally broke down and bought 40 concrete pavers and 280 pounds of sand. With Trudy's help, we got the building disassembled, re-levelled, paved and rebuilt in just a couple of hours. The hardest part was getting the materials home--one paver's not too heavy, but 40 of 'em is another story.
I've got plenty of clearance now. I'm just worried that I won't be able to see Polaris any more--that's going to make aligning interesting!