I have a RC2 that is perfectly centered on two other rifles. I recently built a new upper and mounted it and it seems slightly off. I tried two different SF flash hiders and torqued to 25 ft lbs. I’m sure my measurements with a caliper a machinist square and level aren’t that precise. But it seems there is still .050 clearance minimum on the “tighter” side. I’m not sure if the end cap hole diameter is the same a the entire baffle stack though. Question is if anyone sees a problem or risk in shooting it, I.e. risk of a baffle strike?