It isn't difficult at all, read the articles we have posted explaining where the differences are at.

Injector Dynamics X Series - True Motorsport Injectors - Injector Dynamics

 

As unlikely was you want to find that damage happening at our facility, the chances are about 0%. Each injector is hand assembled with the adapters and it would have been caught during this process. We take pride in our work and it's obvious in nearly every regard. Given the fact you are in Sweden I would imagine it was probably difficult for one of our reps to understand you wanting a replacement o-ring sent from the US when a local solution was much easier for you and us. Even if it was something we were at fault for it would make more sense for us reimburse you for one locally or find a better solution than sending a $75 package across the world for a $1 o-ring. I would rather not waste the time addressing your fuel flow testing bench as you already admitted it was pretty worthless.

 

Your injectors comes in a sealed plastic bag, one slot for each injector.
How big of a chance would it be that someone in the distribution chain opened up the box, took out all four, disassembled one and then damaged that, assembled it again and
then sealed it up with all for again?
I don't really care about paying for an o-ring, I was just hoping for some kind of interest to solve the issue or an excuse but there was none.

 

I would say more likely than the chance of someone grinding one down like that, putting an adapter top on it, and sending it out. I can't tell you at what point it happened obviously, but it wasn't before it left out facility.