I'm thinking of getting bamboo shafts and I shoot 55@28. The shafts I see on Kustom King are 33 inches long. I really dont want an arrow that long. What spine should I get for a 29 inch arrow.

I've always heard that bamboo wasn't very finicky as to spine matching. Be best to talk to someone at Kustom King.

I shoot a lot of it, and I don't see much issue with spine-less with longer arrows.  They're less prone to paradox anyway.

My experience with cane is that it is tolerant of spine and the same arrow will often shoot well from  number of bows, BUT, I would talk to Kustom King about your needs before ordering too.

My bows run 45# - 55#, from Hill bows to cut past center recurves and bamboo spine 55-60 shoots the same in all of 'em. The challenge is that weights can (and usually are) all over the place. 50gr+ variation in a dozen isn't unusual so it pays to ask.

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You can cut them down to the length you need and it doesn't affect the spine like a wood shaft.