I have a HDS 12 and HDS 9 Gen 2 both touch units. Side scan will not work on either unit Down scan works great. I am using LSS2 on HDS12 on back of boat and a HDI on trolling motor for the 9. Both units are connected with nema 2000 and ethernet cable. Is there a setting i am missing or ?. These are used but new to me units and not very familiar with them yet.