Just curious about the 'technical' aspect of the spine of an arrow. I recently purchased the PSE Radial Xweave STL Hunter 200 arrows. The spine is .424. My draw length is 27" and my draw weight is 52.5 lbs. Although, the dw is going to be 55 lbs. or higher by hunting season. My question is about my spine and my foc. I should also mention that I am using a 100 grain field tip/broadhead. What can some of the techs here tell me about this setup concerning the spine and foc on my setup? Thanks.