Hi Derek
I don’t personally have one for you, I do have a couple of bits but am hanging on to them (cables and bars such like). May I make a suggestion: If you can’t get one here then there are two other choices 1) either wait until you have a large enough order to make it “post cost effective” or 2) if you know other members ordering then perhaps they may tack on your spring to theirs, just a helpful thought
Hope you get there in the finish
best
Stuart