hi....i play a stock ibanez rg7321 and its great and all but at the 15th fret on the high b string it doesnt sustain as long as the other notes and i have tried raising the action and it still does it...what could be the problem?
maybe theres a slight buzz on that fret???
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There's a possiblity that your neck got raised due to weather conditions, etc. It happened to mine on the 18th fret of the B string, too. What you need to do is get your frets sanded. Just take it to a local guitar shop and ask them for it, I don't think it's overly expensive, but they do need to keep your guitar in the shop for a couple of days.