The problem is that within 2 years the ball bearings have caused a shallow groove all around the metal base plate and worse still in the front and rear positions have caused dimples to be formed in the base plate so that the chair rocks slightly and creates a clank as it does so.
I would like to hear from anyone who has or has had the same problem and if they have been able to solve it.
Whilst the noise is annoying I am more concerned about the safety of this design. I will try to contact the converters via Poplar Motors but would like more views on this problem
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