After trying the EFOC on the newest set of arrows, and using the Dynamic spine calculator, I am impressed on how easy it was to dial in my tune on my form practicing bow(39 at 27). I can't wait to apply that to my awaited newest member to my arsenol I will be finalizing the deal with a member on here this friday. I wanted to be able to order a RER bow this year, but due to many factors I had to call that off and do the next best thing... Get a near new RER Takedown in 53 at 27, 60 inches. exactly what I was wanting to order. Oh, I am bubbling with excitement. Come on Elk Season. EEEEEOOOOOWWWWWW