I just upgraded my console unit to a 1199, and moved my 998 to the trolling motor on a HDSI transducer.  Problem when I switched out a older 798 SI without a GPS for a 798HDSI I lost the US2 sonar option, I only have now quad beam, and compact sidescan.   I have quad beam selected for now ? is this going to be a issue with using the US2 in my minnkota 101?    I don't want to do any damage or loose any performance.   Appreciate any advice or experiences.