Hi, perhaps a rotary cutter would be better suited for the type of cutting you have. The rotary cutters have a large spinning disc with 2 heavy duty blades and are designed for heavy / large weeds grass and mall brush, these are also referred to as bush hogs.
Jn is right on with hi pot about rasing the mower to high.
GB in MN
Jn is right on with hi pot about rasing the mower to high.
GB in MN