Getting rid of slight spur wobble

[suicideneil]

Well, best comparison I have is the older 3906 slipper; dreadful for getting spur wobble because of the spring. The solution I used ( before switching to a solid metal tube to replace the spring... ) was just a thin shim or washer on each end as you assemble it, then that removed the uneveness of the rotation. Might be worth a shot..