I've been wearing for going on 3 years and my remaining naturally growing hair has continued to thin at the back and I need to extend the base in the back by about a 1/2 inch. Without having to send another mold in to have a new base figured out, can I just tell TL that I need to have the back of the base extended by 1/2 inch? I could send one of my existing bases to TL and indicate that the back needs to be extended 1/2" Will this work as opposed to sending a new mold in?

John