Hi all, 2yo unit, GPS not connected message started about 2 months ago and been consistent ever since. Upgraded software to 2.320 (and base map version upgrade), reset to defaults, tried on 13.5v power source ... a $250 fixing fee that is not guaranteed is a bit of an ask ... would buying an external antenna ($140) solve the error - for my kayak so would really like to avoid going the external route if possible. Options, thoughts and other things to try? Appreciated