4 Trimmer Rack Trailer Set Complete

I noticed before making the purchase for the trimmer rack on other racks that I had seen previously that the trimmers or weedeaters were tilted or upside down in the rack, which is bad on the carburetor especially when it's bumping around going down the road. I used channel locks to squeeze the rubber grip down onto the trimmer shaft and then tightened the grip bolt down, to no avail because shortly after travel and hitting a few bumps later I look back to see my trimmers sideways or upside down.. I do like the locking feature and somewhat easy set-up, the quality however is exceptional.