I recently purchased a new gun, and the shaft it came with had a decent bend. About 2mm in the center held on a straight edge. It had an obvious wobble when rolled on the corner of my granite counter top. They sent me a new one, it's better, but still has a slight wobble when rolled.
Is this normal or should I expect perfection from a new shaft?
The gun is a 95cm Salvimar which has a 7mm shaft
If you can see the wobble, I wouldn't trust it. Return it if you can. Or repurpose into other things like a stringer. I'm not familiar with bending shafts back, but some people have the apparatus to do so.
Shaft straightness is one of my peeves. Which is why I end up being very particular of the brand or who I get them from.
Rob Allen is one of the few out there that really cares of shaft straightness and he checks every shaft. RA shafts are one of the straightest out there and one of my recommended brands for shafts. They are not SS, but spring steel. They're very hard to bend.
Another straight shaft brand is Omer (America One). Dean with Addiction Spears made custom shafts for me and a friend of mine. His were very straight
I used to be into archery a lot more, so I spin all my spear shafts on an arrow spinner to check for straightness. The two tube roll/spin works fine.