pin trick on a thunderbird?

[lithium726]

well, there is an old thunderbird in my house,a nd i just put it in my a7n8x to see how high i could take the bugger.. only to find it was multilocked at 9.5, i stopped at 120x9.5, but i didnt do anythign extensive, and it didnt post at 130. anyway (pin mod or something) to open up the multi? thanks!