I have been tuning my low E sring up to an F# for a song that I'm playing with an acoustic trio. I'm doing a adaptation of chordal stuff that I do on electric (which I wrote the parts on), and i needed to tune the low E up due to physical restrictions. Is this dangerous for the instrument? (it's about as high tenstion as possible... but only stays like that for 5 to 10 minutes at a time