Sorry to say, but I closed the GB and placed the order a few days back, and for various reasons its not possible for me to add more pots to the order (I've sent you a longer explanation over PM). I'll refund the paypal payment as soon as it shows in my account.
However, if you look in the audio gear for sale post, I think JohnWMclean posted a bunch of different quad pots for good prices yesterday (an updated spring sale post), so I would recommend having a look there unless they are gone already.
So, it turns out that TKD just now are changing pin size for the 2511 because they are switching production materials for the internal pot PCBs.
The former type (green color) has 3.0mm width terminals, while the new type (black color: injection molding) has 2.5mm terminals. We will get the latest type for our 2511 order, so 2.5mm is the correct pin size.
Advice on the change of the resistor board 3-1.pdf