I would look at the FAQ section about bedding the forend instead of using the "O" ring, and do that by using a silicon sealant material as bedding.
Think about it this way, as the screw tension as well as all the weight of the barrel is on that "O" ring, and if you bed the area from the take down screw all the way back to the spacer, the weight of the barrel is then evenly distributed, instead of concentrated on one tiny spot, which in my way of thinking, any slight variation in pressure, or change in position of the rest, is going to be magnified because of that one small spot the "O" ring is resting on.
Kind of an off the wall comparison, but to me the principal applies, and we are talking about floating, so just picture yourself standing on the center line of a canoe versus the same position on a larger boat, and then consider the effect of simply shifting your weight from the center line to the side of the vessel and what effect it will have.
I did mine according to the FAQ's (has pictures) and haven't had any problems resting the barrel from the take down screw all the way back to the spacer.
I've found it works for me, but like they say all rifles are different.
I don't know if you have shot the gun yet or not with or without using the shooting sticks, but you might try that first as you may not need to bed or use the "O" ring, as it's just a fix, and doesn't necessarily mean every rifle needs it.
