Thanks Pat B, Muskyman,
I didn't make these shafts, the lime shafts were recommended by Strelets and were reasonably priced, they were 12mm and were way overspined, so I worked multiple staggered full length tapers to get the spines matching, they all end at 8mm at the nock, but some are fatter throughout the length than others as there was a lot of variation in the shafts. I'm trying to find the happy medium between spine and wood type weight, I have some alder timber(photo) that I'm going to run through a taper jig and see how that is, it's a little heavier and denser than the lime, so I think they will work out ideal. I'm hand sawing them so may take a little elbow grease, but I've made a start. The lime shafts are very good, if still a little light, thank you Strelets for the recommendation.
R.D.