How long would rollers last

I put new clutch on today as old user use a 50cc so put one from aerox

Checked my rollers done flat spotted some just starting some ok

Hiw long will they last before they reali go bad

I started lose acceleration a little

 

just replace them? it's not like its as hard or expensive as changing your main bearings. It's just rollers, they wont last long

 

I got a month to sort any way so will do got other bits on the way need few mre so no probs

 

Would there be a away to put a harly type light near the handle bars