I've resorted to high temp paint too though mine is a lot older than yours (though didn't look like that in 2 years).
I guess you could go and ask for warranty- if the rest of the bike looks well cared for, Suzuki might just replace it, and if not you have paint as a backup. Of course a replacement will mean going back to have photos taken then back again for fitting. Paint is a 10 min job if just doing that small area.