with the big spanner you made up did you make that up like an open ender out of plate or something did ya? I'm currently away at work so if you could post a picture and include the jaw size that would be great, I will try and make one up..
Just saves me paying postage to get yours up to me and sending it back thats all.
In saying that if all else failed with making one myself I would definitely take you up on that offer, cheers