FX FX Wildcat MK3 leak (cannot be filled anymore)

Sanity Check.

First of all I think that this FX dealer sold me a used pair or valve parts for two reasons.
First because they obviously have marks and dents and secondly is because when I first
asked him for these parts, he told me that they will be available at the end of the month.
But after two days and when I placed the order, he told me that they are available and
that I can collect them.

But after seeing these parts I think I was installing the valve seat in the wrong way.
Have a look at the following two installation orientations:





Orientation A is how I installed the valve, is how I found it installed in the airgun and how I saw it
be installed in the Ernest Rowe Masterclass video for the Wildcat.

But if you take a look at orientation B, you will see that the seat valve has a circular marking at its
center which coincides with the diameter of the Delrin and if these two parts were used, then this
inner mark makes sense.

Either way, when I mate the two parts in orientation B, I feel that I have a more secure seal.
 
Sanity Check.

First of all I think that this FX dealer sold me a used pair or valve parts for two reasons.
First because they obviously have marks and dents and secondly is because when I first
asked him for these parts, he told me that they will be available at the end of the month.
But after two days and when I placed the order, he told me that they are available and
that I can collect them.

But after seeing these parts I think I was installing the valve seat in the wrong way.
Have a look at the following two installation orientations:





Orientation A is how I installed the valve, is how I found it installed in the airgun and how I saw it
be installed in the Ernest Rowe Masterclass video for the Wildcat.

But if you take a look at orientation B, you will see that the seat valve has a circular marking at its
center which coincides with the diameter of the Delrin and if these two parts were used, then this
inner mark makes sense.

Either way, when I mate the two parts in orientation B, I feel that I have a more secure seal.
i thought so. I honestly felt stupid for a minute, like i lost my mind. Try it in B