Yes. As long as the order hasn't shipped out yet, we are able to add onto your order. Please use are contact page: Subject Order Payment/Refund with the list of items you would like to add. We will send you an invoice for the additional items.
If you purchased a kit from us and it ended up with a missing part or arrived broken. Please contact us via the contact page: Subject Product/Replacement Inquiry. Let us know which part you are missing/or that broke and we can get it replaced for you.
*You are able to upload pictures of the broken pieces if needed.