Solidoodle 2/3 Y Rod Support

I tried using the pillow block described in http://www.soliforum.com/topic/4824/how-to-forget-about-circle-problems-for-ever/, but unless it is printed and installed perfectly, I found it was binding the rod rather than supporting it.

So I designed this "self adjusting" replacement with some wiggle room so the rod can guide exactly where it ought to be mounted.