It's nice of you to offer, but I actually already have a spare 130 BCD Stronglight ring. The problem is I need a 135 BCD (Campagnolo style) one. (I'm assuming that yours are 130s?)
Actually, I probably
don't need a replacement ring at all (yet)... I have just been out on my singlespeed bike and after only 5 km of riding with the swapped ring, the troublesome noise returned so it looks like the worn original ring was not to blame after all!
I can't figure out how swapping the ring could stop the noise, but it then returns after a couple of short rides to the shops and back...