CK;
Thanks but I'm obviously being thick.. The plastic undertray at the bottom of the machine appears to be just an external base cover with a small recess near the middle that has a threaded bolt stem protruding down.
There are also 2 screws at the bottom outside edge of either side of the base cover that run the depth of the machine from front to back.. I have loosened both & the screw heads have now dropped from their retaining lugs but still no movement, what more do I need to do!!
Jim
January 2010