my E7 is acting funny . it worked fine last week . went to use it this weekend the touchscreen part was not working. touch one function it would do another on the other side of the screen. it would work fine if you did a touch screen lock and just used the joystick . but this is a PAIN IN the A?? once you get use to the touch screen. it there anything I can do to fix this with out sending it back. Plus I would like to not lose all my way points?