First, I have the fix in my car for a year now... What kind of weather were you having when you first installed the fix? If it has gotten substantially hotter or colder, you need to redrill the hole in another cap for this temperature.
"My family hauler can kick your family hauler's @SS!" ~~~~1999 Contour SE Sport~~~~ -KKM True Rev -Custom cat back Flowmaster exhaust -All Cat's fixed. -SHO Shop Off-Road Y-pipe -Many other Mod's done...