Norm Peterson
Corner Barstool Sitter
What you need to do is shorten the poly until the inner sleeve is slightly longer. Then grind/sand the faces into very flat cone shapes. This will prevent the bushing from grabbing the sides of the chassis-side bracket and forcing rotation to happen about the bolt instead of about the outer surface of the sleeve. A side benefit is that any clunking from the UCA will likely disappear.
Norm
Norm