After going thru 6 combo units of another brand on my 12 year old boat, I figured it was time to try for something more reliable. Back in May i bought a 788ci combo and have been pleased except for one major item. When in the GPS mode, all details on the screen are so small they are basically un-readable. I checked with Navionics but they had no solution. The answer I get from Humminbird customer service is that's it's due to the hi-resolution 640x640 screen. I have good eyesight, but I basically have to be within 6" of the screen to see the depth or channel markers on the chart. This was not the case with my previous 6 units and it's left me extremely frustrated with this unit. Has anyone else noticed this or is it just me? Other than praying for an update, does anyone know a solution? Thanks