Just got my M&P10 and put 15 inch hand-guards on last night. Anyone else have a hard time getting the gas tube notch to line up? Meaning if I backed it off to the notch before I was barely at 20 foot-pounds. I had to constantly loosen and torque it again to get it to line up. I was worried it would snap the upper. I had to go over 60 foot-pound to get it in the right spot. Never had this issue on my AR-15's. It seems like the barrel nut is less forgiving.