Me and my wife weren't able to go to our usual pro shop today to buy arrows and we have our first 3D shoot this coming weekend. Our new arrows are about 25 grains heavier than the old ones and I would like to shoot a mix of both if possible. I shoot at 55# and my arrow weight went up 20 grains to 360 grains. My wife shoots 35# and her arrow weight went up 25 grains. Do we just need to stick with one set? I will eventually replace the old ones with the new ones from the new pro shop. We are not professionals and today was our last chance to get arrows before the shoot. Hopefully we get more practice in.