More on the K-28 tender deck search

Thanks to those who have responded to my previous request for information on the K-28 tender deck top. I am still in need of information as to the placement of the rivets on the deck. Some others, who saw my post are also looking for this information. Part of the problem in locating this info is that the tanks were apparently replaced by new welded tanks that have no rivets on the top deck. Does anyone know what happened to the original tanks?...and if they do exist, are they anywhere they can be photographed? Also, if anyone knows where there is a photo showing the rivets on the original tank, I would still like to hear from you. Thanks.