According to Rhonda at customer service of ikelite, she claims that you can order the lead weight that fits into the aluminum tray of the SLR cases with any Authorized dealer. I have yet to find any dealer that has this weight. She did say that I can buy it directly from ikelite, but must call to order. I am on the west coast and is a bit of a pain to call and order. If I must, I will order by phone. I do find it more convient to order online. I have checked with B&H Photo and Adorama which has a large stock of ikelite products. It is not listed with either one. Has any one been able to locate this lead weight online that I am not aware of ?