Yep, agreed with FM - US lads have a LOT of cases of this. Not sure if its because of climate, coolant types or country of assembly, but I would refer you to SS forum, its listed in FAQ even.
to OP - same for you, have a read on SS about similar cases, there are picture tutorials how to deal with it aswell and some "other than standard" ways of dealing with it.
Terrible place to have a leak, I pray daily for this to never happen to me.. (along with 184 other prayers, each for different "common faliure" part
)