Help Camelbak Bidon Caps

Sheep

Maximum Pace
Jul 27, 2009
285
54
48
Tokyo
#1
Not sure if this is the right sub-forum, but...

How on earth do you get the rubber caps off to clean them? I've managed it a couple of times with one of mine, but the other won't budge. The Camelbak video makes it look so simple. Am I missing something? Is there some secret to this that only those in the know, know?
 

Sheep

Maximum Pace
Jul 27, 2009
285
54
48
Tokyo
#2
OK, ignore the above post. I discovered how to do it - rather than yanking in vain it seems twisting while pulling works...