tomorrow I'm having my bow turned down to 60 pounds.....I mean I could do it myself but I don't have a scale to see what it is at, I'd rather be safe than sorry, when I first got my bow I went out and bought my arrows the guys at gander mountain said i shoudl be fine with the 45/60's, but I don't want to cause any damage to my bow, what is a guidline to go by when figuring out lbs/to grains of arrows?...also i figured out my arrows weigh just a fuz over 20 grams, i don't have a grain scale, its either ounces or grams...lol your pick....at 60 pounds will I be safe with this setup?....I just don't want to cause any damage to my bow by shooting too light of an arrow....do you think I will cause any damage with this setup?