Customers toilet was leaking from base. Upon removal of the toilet I noticed previous wax rings had moved upon installation and where never properly sealed. Added a spacer to customers old toilet flange to raise level to finish floor and installed new wax ring. Did not charge customer anything due to in proper install of wax ring on previous visit. I did notice customers toilet flange was installed uneven. Explained to customer that if he comes continues to have issues with leaking then I recommend replacing toilet and installing new toilet flange