My code is done and I have a clean assembly. I intend to install it tomorrow (Thursday) on the theory that if it doesn't work it shouldn't affect anything else. This is the format of the SSDNs that you need in order to construct data base devices: +-------------------------------+ | 0 const | +-------------------------------+ | 80 (hex) const| 19 (hex) const| +-------------------------------+ | 0 const | 0 const | +-------------------------------+ | 0 const | device code | +-------------------------------+ device codes: 1 T:SDHAMB (you will 2 T:SDHCLK use the same 3 T:SDHFSL codes for the 4 T:SDHDDR vertical damper) Each device uses the same SSDN for its reading, setting, status, and control properties. The SSDNs for the different devices are distinguished only by the device code. I able to answer general questions about data base entry, but I am inexperienced in the particulars. I figure that my code gets tested the first time you try to use it, so look me up when you are ready to try.