If the wax ring is failed, I think it is time to have a non wax seal put in. There are a couple kinds but they are a rubber boot which will allow some flexing and not fail. If heat is making the wax run one of them will last alot longer. "Adapt, Innovate, overcome" By the way, if the worst problem your son has to overcome is to go down stairs to use the john, he is blessed. RW