Sometimes when it rains it pours. Hopefully these events will mean that you got all the bugs worked out early and the rest of the year will be event free.
I have a low point drain for my water heater that had a plug screwed into a collar that goes around the line. The collar got old and cracked so that there is no way to get the plug tight anymore. Last year a bolt with a o-ring on it screwed up into the line got me through the season. This year the bolt would not hold. The other day I tried a self starting bolt with a flat rubber washer on it screwed into the line. That has been holding for a few days and I have my fingers crossed.