Sorry to be the bearer of bad news but the arrows you have are horribly spined on the high side. Even at 60 lbs it would bring them out of being maxed out of spine. I even went down to the maxima 150's and at 60 lbs it was still in the middle of the red zone for high spine. Here is a shot of what OT2 showed for the 350's. In it look at what the static spine says for your arrow and then look at what it says is your optimal spine and you will see how far apart they are