Bed the Envy. I had to bed every Evo chassis I had. It's the Vblock design of the inlet. If you're dubious by all means test it first.
Here's how you do it. Set the rifle on the butt, barrel pointing straight up, on a work bench so the action is generally at face level. Ensure the action screws are torqued down. Loosen the front action screw slowly until you get to that point in which the screw releases tension on the action. It will be a half turn'ish point in which you can begin to tighten the threads or loosen them so they apply no threads/ screw cap tension. When you get to that point, if the action pulls out away from the inlet because the rear action screw is applying flex via the tang then you have flex in your action and it needs bedded. Turn your Allen wrench back and forth engaging threads <-> disengaging threads, watching the front of the action from the side. If it is releasing and pulling the action back and forth in and out of the inlet, it's flexed.
I learned this with an Evo that had a "cold bore" shift every time. It shot great groups but had that annoying first round shift. Bedding it fixed it. And it was torquing the action. I had two more Evos with different actions. They all did it. Betting an Envy uses the same inlet design.