I bought some arrows with custom colored fletching just to keep them seperate from the my friends arrows. I compared them to my factory prebuilt arrows and found the fletching (2" blazers) on the custom arrows were placed back an 1/8 in farther. All are square and look right, just an 1/8 " closer to the nock. How will this effect the % weight FOC? Will they shoot differently at longer range? How much difference can I expect? Is this issue something I need to address with the builder? They seem to be hitting the target about the same at 20 yds. I don't want to have to reset my sight everytime I buy a different set of arrows. Thanks in advance for the help.