Hey guys, I've been told that hitting larger twigs or sticks (the kind that are want to stick out of the ground on a new contruction lawn) will take a HRX's blade shaft and bang it up real good for lack of a shear pin. Is this true? You don't run into those types of things (typically) with a lawn tractor. If this is true, I may have to go small rider. My yard is rife with these sticks (and as the ground settles more I see more poke up). I can't handle the thought of a 730 dollar mower going belly up on the first couple of passes. Any thoughts?