CVT Nissan MIcra?

Hi sounds very much like your secondry drum may have split.
A very common problem,however this is normally caused by the valvebody being worn and allowing excess oil pressure to enter the drum and cause it to split.
The problem gets worse when the car gets hot as the metal expands when it gets hot opening the gap up.
This would need confirming properly,ie driving with pressure gauges attached to confirm the problem.
Richard
rbtrans@hotmail.com

Richard
December 2008