Lowrancenet EP-15

I have a EP-15 Fuel level module hooked into my network. My in-dash gauge LMF-400 reads the tank correctly. When I try and setup the guages in my 7600c HD the “gauge” it generates comes up 0-100 which I adjust to 0-40 ( I have a 40 gallon tank)at just under half tank, I see the sender is telling the network 45% ( correct) the LMF-400 reads 45%, but the “gauge” on the 7600C HD when adjusted 0-40 reads as if the tank was full. I have checked the units page and it is supposed to read gallons, to me it appears the unit is reading the tank full percentage as gallons, how do I correct this and get it to read correctly?

Also I have a 2 EP-35 temp modules in the network, it recognizes 1 correctly and the other comes up as a EP-10 fuel flow module ( which I also have ) how do you reconfigure the module to come up on the network correctly?

Yeah it seems the head units may need some calibration, I have one installed on my oil resevor, in hopes I can someday see oil level, as of now I haven’t figured it out either, maybe if feel better (sick) and get some time on the water, I can get it figured out. Mine reads a 114% or something right now… I haven’t ventured into calibrating anything yet, my ep-10 appear to need it too, but I’ll change the mounting location first, before I attempt that one.

I’d be interested to know what you find, there seems to be very limited info found online.