I have a 2000 H340 with (Autohelm) Raymarine instuments - wind, depth, speed. The wind is an ST-60 and I can get new sun covers for that but Raymarine says they no longer carry replacement sun covers for my other instruments. They appear to be ST-30 depth and speed and are approximately 3.5" X 4.5". Raymarine parts people refered to them as "BiData" covers. Does anyone out there have a source for such items?