I strung a 110 with gosen at 60 lbs... I have a bab rdc at my disposal... I checked the rating and it was 65 (i know this is not the tension) One week later with maybe 2 hours of play it was 58. One week later with maybe an hour or two or play it was 52 and I restrung it because I find that I play best at 55-57 RDC. Is this uncommom for this string.