Thanks for your email.
Today I have asked our factory to check these spare parts again, for the possible to find your required parts.
If no parts, the only way is to send you new one or change to other items.
In order to save the problem, I have to make the new one send together with your new shipment.
Since it is very difficult for me to send these new one total 13units to you directly, it is better to put the 13units inside your new order to be shipped together.
Hope you can understand what I am trying to say.