I used to shoot cheap carbon express arrows that have 5" helical feathers. I decided they would suck for hunting if it rained and they're just too hard to protect all the time. I bought some gold tip arrows that have vanes and today when I was shooting them some would fly perfectly straight then others I would see in flight look like they kick out to the left then straighten back up, my groups weren't nearly as good as with my other arrows, but they weren't ridiculously bad either. Is there any way to fix this? getting it refletched? Changing tip weight? Anything?