Their shipping pricing policy doesn't make any sense - because of this last time I ordered oil from them, I added lots of small parts to the order just in case I need them in future. It is cheaper to add then to bulk order (even I never need them probably) rather than get to the same situation you are in now. I think I have few extra screws (old design unfortunately, same as yours) and can mail it to you. I am in US, so shipping won't be cheap (I checked and looks like it will be ~$15 or so). Hopefully you will find some option closer to you, but if you stuck, instead of paying Kinderday that crazy money for tiny part shipping, let me know and I arrange a postage for you.