Howden's pull-out tall larder unit, 5 years old, parts not available now.

One lower track has become slightly pitted about halfway along (why?!), meaning that the weight-bearing plastic wheel on that side sets up a slight vibration in the whole metal carrier when the unit is opned or shut.

Adhesive aluminium tape over the pit, or metal epoxy putty? Will either last?

Mike G, November 2020