Ikea Gulliver Cot - can anyone help?

[BikeChick]

I have a Ikea Gulliver cot that I bought 5 years ago. I want to take the side off and turn it into the cot bed for my 2 year old but in a house move we lost the plinth that goes on the base of the cot when you take the side off. Does anyone happen to have the plinth (I don't mind if it is wooden or white) I could buy from them? I realise this is a long shot. I spoke to Ikea but they can't help me in any way (would have to buy the whole cot again!)

Anyone with this cot will know the bit I mean!

Thank you so much :)