When is it time to replace the anchor gypsy

[Jamesuk]

Recently I have noticed the anchor gypsy making an odd noise ;(slip friction noise) I checked the gypsy wheel and the chrome has polished itself away to reveal (brass?) below.

Any thoughts?

Ps we replaced it 3 years ago when the chain began to twist itself to the point of jamming after just 20m of chain

 

[TQA]

I replace mine when the chain starts to jump on the gypsy. But I do check to see that the chain is not wearing out first.

.

 

[pampas]

high wear rates on the gypsy is usually caused by
A, wrong chain specification,
B. hard usage and stretched out of spec.