Last fall I hit a root with my LT1040. I shut it down immediately and replaced the blades but two of the blades now make contact on part of the rotation. Nothing looks bent in there and the spindles are only a year old. Any thoughts? I thought about replacing the blades or a spindle or even shaving a half inch off the blade but I don't want to aimlessly throw money at it nor exacerbate the issue. Thoughts?