hey guys, i have this old teisco that i bought at a pawn shop, and it has a problem with tuning. I tune the 6th string to E but then the 5th fret plays an A that is a tad sharp. what can i do about this? is therea any way to adjust the bridge to get teh strings sounding right, or is it a matter of the frets. If i were to get it re-fretted would that do the job?