It's a small price to pay mate for piece of mind, and when they go, they always go just after everyones gone out... There clever like that, they work out the optimum time to fail to ensure that they leak undetected for as long as possible.

Did you get the pics up mate, the albums there but nothing in it.
One quick tip mate, sorry if im teaching you to suck eggs but with plastic only hand tighten, dont go anywhere near it with a wrench, it's easy to squuze too hard and deform the plastic nut or thread.