Thanks so much for your help as I really dont know what im doing LolWelcome to UU, Helene!
I wou advise you to open a thread in 'Uke Talk' to get help with your question. That forum is used to discuss general uke talk. Should you have a photo or an image of the make in question that could also be helpful to prompt replies. (Personally I have never heard of Diastone Ukuleles, I'm afraid.)