RE: Sights question
Well, there are several factors to be calculated here. Yes, it will most assuredly change your sights. You've increased your speed, and though it may be only minutely, you've also changed the spine of your arrow. That may not be an issue at all, it just depends on how close to the line you were before you increased your poundage. Any change you make to your bow will usually change the sight. Nothing to worry about in the least.