Swan multi-use food processor?

I know your question was 2 years ago and I don't have a coupling for the SP3050, sorry! But I would be grateful if you could tell me if there should be a small central lid on the blender of this machine. I have had it for 3 years and only just unpacked it (I was waiting for my Kenwood to finally give up the ghost) and I find there is only a large outer lid on the blender. Can you tell me if that is right or should there be a smaller lid to fit over the central hole? Thank you.

Doreen Bodily
May 2008