Does anyone have an ArrowSpine tester?

the reason i ask is ive been wondering what the difference in static spine is when you change the arrow centers from 28 to say 30 or 26 inches for any given shaft....

basically i want to know how much changing Arrow length effects the spine. i imagine you can get an idea with spine calculators like the one posted above....but id like to see actuall numbers.

its my opinion that Point weight doesnt really effect spine that much and should only be used for very fine tuning.....Like the last thing you change when tuning your arrows...

..for your bow i would go with a 2016 at 29.5inches and a 125 or 145 grain tip....you could also use 2114 a longer 2018 and dont rule out a 1916 .....arrow tuning can be tuff ....specially if your having a hard time with your release. a clean release is important.... slightley weak spine is better to have because its easier to fix. if your arrows too stiff than your just screwed right from the start.