what spine surewoods for 54# recurve? confused by tuning results

[Mark Normand]

Gang, would like to bring this up again.
Seeing that dang big Woodie thread got me wanting to build some more arrows. But I've been shooting the same cedars through so many bows the last 5-10 years, I kinda forgot some critical info on them. I had a big stockpile of raw shafts, all done now.

I would like to try making up some of these Surewood Douglas firs, to get a bit heavier than my usual POC tapereds.

Bow is Morrison Cheyenne 44#
My draw is 28.25"
My current arrows are cut to 29.75" and fly very well.
String is XCEL, 12 strands.
Shooting split fingers.
Always use 125gr points & broadheads
Fletching is always 3 5inch hiback shields.

What spine range and what test kit should I be looking at ?  

How do these fir arrows compare with straightness, and keeping them straight? Years ago I tried some laminated birch, but I couldn't keep them straight. I made quite a few tapered cedars, and have excellent success with straightness issues.

I have a drill powered Tapertool, hopefully they will cut these ok? Any grain tear-out issues?

Do these come marked for spine cock feather orientation? Is it necessary?

I see the Surewood site is out of some of the common 11/32 spines, so I may end up at Braveheart Archery, per the good reviews. Any other input regarding Surewoods is appreciated.  

Lots of questions! Thanks!  

[Fletcher]

Mark, I'm thinking your Morrison is cut past center.  Figuring quickly, I come up with a 69 lb spine, so I'd start at 65 and go up from there.  If cut just to center, go lighter in spine.

[Tim Finley]

Im shooting the same setup as you and mine also strike to the left even though they appear to have perfect flight. My experiance is that the spine is too weak, try 70 #.