I have a TZT3 on the fly bridge and Timezero Professional on the bridge. I bought and installed the depth package for PRO. The depth reading and graphics say not connected most of the time. Sometimes it does connect. I am using the TZT3 internal sounder control with a 525STID (B277V) transducer. My Maretron display reads it fine on the NMEA2000 bus and the TZ Pro reads all other devices on the net just fine. What am I missing? I appreciate any help.