I have an 1998 evinrude 115hp loop charged motor on a 16ft larson flyer. Everything works great except for the tachometer and the motor tilt. Tachometer doesn't work at all and the tilt goes down, but not up. It only goes up when the boat is planed out. the battery is fully charged and is brand new. I find this very strange, any suggestions on what I can do before I take it to get repaired?