Morning everyone,
I remember seeing some posts about shapes not closing on some K40’s. I, too, had this problem. The way I solved it was to tighten the guide rollers on the lens carrier of my k40. These are the white rollers. They have an offset axis. I adjusted them until there was no play when twisting the carrier assembly.
My issues with circles not closing properly were resolved after this. I’m hoping this helps others with similar issues.
