Robertuko

Hi everybody, I write to you from Spain. I bought a second hand pod x3 live, and when I received it, I hear something rattling inside. When I tried to disassembly the pod, some of the locking screws were imposible to loose. The allen key did not fit the hole. I don´t know how the last owner opened it. He broke the inner of the screws. I loose all the bad screws very carefully with a pliers. I would like to replace all the screws with new ones. Does anybody know how these screws are? What thread pitch? I know that the key must be a 7/64 inch Allen Key, but I think that the screws are not metric. Are they whitworth? I wait for your answers. Thank you so much!!!!!