When you get it apart and read the flyboy document, you will understand how it works. I likely never fit very well, mine didn't and failed like yours in 20 hrs. A little filling adjustment and some deburring to prevent recurrence and mine has been happy for a couple of years. Annual ( yearly CI) and first cleaning coming up soon.
I was afraid it was going to be finicky but it's fine with adjustment knowledge.
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”