...you may have worn grooves through the plating and smoothing will last a short while and you'll have a rough tip top again. Replace it and if not confident in doing so, yer local fly shop, tackle shop and especially a bait shop will put a new one on in minutes after your arrival. Did that once and
got the eyes on tutorial...never had to pay to have it done again. Two minute job.

Cheers,

MontanaMoose