Its the lack of clearance behind the Caster Block that bends em.
Funny the old RC8s never had this problem it seemed to surface
when they reinforced the upper A arms.
There not that hard to straighten with a couple of pairs of pliers.
After that I would open up the back of the Caster Block slightly
with a dremel. Maybe give it a MM or 2 more clearence then break
the sharp edge at the shoulder.