I bought octopus on ebay: Seaquest XR2. Two techs at dive shop have different opinions. One says water entered the first stage at some point and needs a replacement kit and the other says the it is like new. Both recommend a replacement kit on the second stage as a matter of proper maintanance. Seaquest was bought by Aqualung. Aqualung told the tech that the kits were not available any longer. Does anyone know where to obtain 1st stage and 2nd stage kits? I am looking for a recent inexpensive version of the book entitled Scuba Tune-Up Guidebook.