been cruising since first wk of June. Sometimes in real dense fog through narrow passes. This plotter is having problems zooming and freezing up. When i zoom, using manual controls, the cursor takes off for parts unknown. Touchscreen is really flaky. When it freezes up, i have no control over plot functions or radar and it happens at the worst time cuz thats when I'm adjusting things. Sometimes it just freezes up when it feels like it. The rotary knob feels hard to turn and then easy. I think that whole assembly needs to be replaced. On a 3 or 4 yr old plotter....So then, out comes the ipad with Navionics and it has saved my bacon several times. On the E7, I've done the touchscreen cal several times and its been to RM for the touchscreen recall. Anybody else using this plotter having these issues? Oh ya, not the latest Lighthouse II software but these are pretty basic functions.....winter project: get USB power to the helm...