You could always try a counterweight system to even up the weight/load if applicable?
From memory I believe I've seen a system as such done with ropes and weights on here somewhere in a roll off roof discussion.
I was a supervisor at B&D many, many years ago in Mascot (Sydney), their tracks were strong back then but I know many manufacturers are making cheaper grade components now to maximise profits and reduce overall quality/longevity. I can't say B&D are actually doing this as I have no idea but I know a lot of places are.
We can't have everyone driving around in 33 year old cars like mine as of next month, nothing is supposed to last that long now.
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