Looks like this is a common problem. Mine came loose on our last trip and the drain looked just like Capt"s....rotted. Not Heartland's problem in particular but they need to know about it so they can quit using that supplier. Capt, what drain did you end up with from Lowe's? Maybe someone from Heartland will chime in and advise if the original manufacturer will step up with a replacement, although that might not be a good idea due to the fact that if the replacement drain assembly is the same as the original it might not last.