well, last night i got home to notice some water under my car. i checked it out today and in the welsh plug closest to the passenger side of the car was a little pin hole. water was pissing out of it! i probably lost about 500mL of water in total, but its a leak and needs to be fixed. i used some liquid steel used to fix radiator leaks (comes in 2 tubes: 1 bonding agent, and a hardening agent, then u mix it) im hoping this will hold, but if not, has anyone experienced this before? anyone changed the welsh plugs themselves/or had a mechanic do it? any input would be appreciated.....thanx guys.