I had problems trying to get Jandakot Airport Holdings to assign the lease when I bought a building. They tried change a 23 year lease into a 5 year one, then tried other extraordinary tactics to stop the assignment. I won, but it cost me a LOT in legal bills to do what should have been straightforward and was the most unpleasant business experience I have ever had. That was during the "We're going to move Jandakot Airport" fiasco which also made getting finance impossible.