might be worth popping down and having a look, if he has a physical shop. i might try and contact him next week as he has quite a bit of stock.
Don't buy the Triple S chains. Me and a friend both had them on our Aprilia's and the stretch rate was horrendous. He complained and they sent him another which did exactly the same, I just threw mine in the bin and went DID which I should have done to start with.
I have a brand new ducati rear sprocket and a did professional chain 525 x ring for sale if your interested.....you just need a new front....£ 130