The factory sez that these cups work very well, they are sending me another one.
Seems like others have had this ducer problem before.
The tech at the factory is sure these things work very well and I should give this new ducer a a try.
I told him that others have had a problem, he kind of shrugged it off.
I wonder if Humminbird ever reads this forum?
Thanks for reading my vent.
Roger