I have had this Waterman Expert? for about 10/15 years. Needless to say I absolutely love it. However, while at a meeting last week, without thinking, I unscrewed the lid rather than pulling it off. I was horrified when the lid came apart in my hand. As you can see from the attached photo the problem I now have it putting this all back together. Has anyone had a similar problem? If so is this something I can fix myself - or do I need to send it to the Waterman agents and face the undoubtedly expensive repair bill? Thanks for any suggestions