I had not shot my Mathews Switchback XT for awhile because of surgery and when I started shooting it again a couple months ago it was shooting about 4" to the left. My stance hasn't changed, nor has any of the equipment changed and I KNOW FOR A FACT it was sighted in perfectly. Nor does it have cam lean and nothing I can see is out of kilter. Nobody has messed with it either. It wasn't a problem to gang adjust the sight pins but it has me wondering. The arrows are also exactly the same as they was as well. By the way, My QAD rest is still exactly the same as when I tuned my bow perfectly. Any ideas?