Thanks guys for all the help. I learned something from each post.
I'm going to look for Douglas fir test kit and also Woody weight test kit. I'm going to use these in a Kanati longbow
that is cut to center with a 8 strand FF string, 40 lb. bow  3  4 in. 30 in. BOP arrow fletch RH sorry I didn't put that in my 1st post.
I think I will start out with full length 55-60 Douglas fir Surewoods premium Tapered shafts if I can't find a test kit.
I'll be shooting Grizzly broad heads so I'll have allot of different weight heads to pick from. I'm also getting a field point test kit. If I get them to bare shaft tune will anything change after I crest and finish them? If you guys think 55-60 is to much or lite let me know. All I can find right now is the Cedar test kit from 3 Rivers so far.
Thanks so much!!

I would get a test kit 45-50 50-55 55-60 from Wapiti arrows and get tapered shafts.  I shoot the same specs from Holm Made River Runner and I like the 45-50's.  I draw a true 28 inches.  At 30 inches long on the shaft who knows maybe you can get a way with that shaft.  Most people tend to shoot arrows that are too stiff and most have a draw length shorter than they think.  You will get better spined arrows from Wapiti.  Plus you can get tapered on the back 9 inches.  Curious as to why you want an arrow that long?

Thanks Jeff
I just ordered the tapered test shafts from Wapiti.
30 in. Arrows are what I used in carbon and I can always cut them down. I'll let you know what works best. Thanks

One note about bare shaft testing with wooden arrows. You will need to be close to tuned with a fletched arrow before you try it. I learned this the hard way by breaking several in the first few shots when I was going through the test kit process.

Thanks James
That is exactly what I would have done. Then I would have had broken arrows.