Just bought a lowrance elite 4 and navionics hot maps(south). Only been able to use /play with it once. Was playing with it at home tonite and noticed it shows the info for Arkabutla and Enid but not Sardis. By info I mean creek channels, river channel, contour lines, etc. but Sardis was just a outline of lake. No lines/data. Y'all ever had an issues like this?