I had this with my Freams 4500J which is very similar to the Capricorn
I'm not certain whether it's the same issue although I had too much freeplay in mine and changed the bush in the left hand side of the body for a decent bearing and it's way better.
I believe the Capricorn may have more bearings than the Freams although once again not sure (I'm too tired to research it at the moment) lol