The leak problem with the Pingels was a mounting issue. Some have received the Pingel with a thick gasket that split when you tightened the bolts. Others have not had that problem. Some have said they had to file the hole in the tank a little bigger so the screen portion would fit up into the tank. Others have not had that problem. And some members have had no problems whatsoever. There are fixes available if you should buy one and have a mounting problem.
As for the stock petcock - same thing. Some have had problems - some haven't.
