So, my FW75 just doesn't feel like it did when it was new. By that I mean it feels like it's slowly lose some power over the years of use. I'm wondering if this is an indications that the brushes need to be replaced. Trolling batteries are new Duracell Platinum AGM's. That was my first thought that the batteries were just getting old and tired, but replacing those didn't seem to do anything.
Anyone have any experience with this? Or is it time to replace the entire thing?