Whenever you make a change, you need to recheck your setup for good arrow flight; and retune as necessary. If you have good flight now and increase your bow weight 10-15 pounds, I'd guess you will probably need to make some adjustments in the way of shortening your arrows, reducing point weight, or going to a heavier spined shaft. Trajectory may be flatter to some degree (but not necessarily if you change to a heavier shaft), and you'll need to practice long enough with your new setup to recalibrate that computer between your ears.