I don't think Dick Sequerra wants much to do with the D-S models. The upgrades, as I recall them from the review, seemed largely cosmetic (better back-lighting, brighter scope display, etc.), although it certainly doesn't hurt to have your tuner brought back up to spec, and Don Scott probably could easily do that. The folks who handle the D-S were moving about a year ago, they said they'd call me when they were set up (I too own a similar vintage D-S) but I haven't heard from them so I'm not sure what's going on. When I get back to the office tomorrow I'll check my old e-mails for the woman I called and let you know (as well as give her a call).