Quick question for someone that has installed one of these. Did you bolt down the sensor like the manual says to do? Will it still work if it is just plumbed into the fuel line or does it really have to be vertical and mounted to something to keep it vertical. I am looking for a place to do this and dont have many options. Any and all help regarding any experience with the Navman 2100 would be appreciated. Thanks.<br /><br />searun1