This is my assessment also. You can increase the wire size or fuse size or test power supply or all that; but appears the motor is drawing more power the longer it runs. That's mechanical failure.
We also use those red blinking lights which are supposed to scare critters away. I can see the light gets distorted by the monofilament. the deer avoid; we don't have deer entanglement problems.
I couldn't find a Fimco 40 gallon 3pt; but the 45 gallon Fimco 3pt is available.
Affordable, works great on my 8 acres. Fits snugly in the L2501.
This is the first spring where I am not flying acres of dandelions. Now I can try to grow something.
Putting cedar log ground barriers around the blackberry patch to keep the grass out. I was clearing cedar from around a patch of black walnut trees who don't need the competition.