My acoustic guitar has sympathetic resonance that is getting distracting for me. If I pick an open high E string and mute it the A string rings until I mute it. If I pick an open B string and mute it the low E string rings until I mute it. I had 12-52 strings on it then switched to 11-52 strings and it is not as quite as bad. Any ideas on how to fix it? Could something else be wrong with the guitar. I have had the guitar for around 4 years and just noticed this in the last six months.