Looking for some opinions. Im shooting goldtips 35/55 250gr. tips and 8gr. per inch weight tubes total weight 696 grains. I currently have 4in vanes and get pretty good arrow flight out of my 50lb martin. Should I change up my fletchings or stick with the 4in. Will it affect spine and be worth trying. I never intended shooting the 4in feathers but was given the arrows to try and they fly pretty good. THanks for any opinions
scott