Ballard x-blade review.

I put a set of X-BLADES on my John Deere Z920R ... The upper blade centers on a raised boss on the spindle ... the lower blade wobbled around like yours ... I made a set of spacers that filled the space between the spindle and the hole in the blade. Never used any brackets to keep the blades at right angles to each other ... just bolted them up tight, and they have yet to slip. They work just fine on my machines.

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