Yes, you can see the spine vary as the shaft rotates. My ACEs show about 0.06mm or 0.0025" deviation which I have yet to translate to spine. Interesting my 1 1/2yr old ACEs are all still within 0.0025" straightness with no load and they have been shot a lot into foam. I'm yet to see if the spine variation aligns with the arrow straightness variation. I'm going to bet it does and will make life a lot simpler
ACEs are concentric with no measurable deviation.
Compare that to my Easton apollo 610 which has a straightness deviation of 0.13mm 0.006" (6thou) and a spine deviation of 0.32mm 0.016" (16thou).
At present the weight is off my barebow, 1.5lb as I only have 303 stainless bar stock at the moment for customer weight orders and it's a waste to use raw stock 303 for a spine tester. I will make a 1.94lb weight when I get some mild steel, although I have some brass kicking around some where. But I'm really only interested in spine alignment and arrow straightness.