I've been rebuilding the carbs on my 78' 550. I was winding the spring round the choke linkages (which connect the two choke spindles), and managed to snap it, i cut it back a bit and bent the end back round, but just couldnt get the linkage to work properly, to the point where i got frustrated and managed to bugger the spring totally... Its the spring on the right hand side in this picture for reference:

I've put a wanted thread up for another spring, as i havnt been able to find one to buy seperately online from the likes of david silver etc. I wanted to ask if anyone knows where i could get one? Or will it be a case of finding someone willing to part with a spare spring?
Has anyone been stuck in this situation before and managed to fine a way round not using a spring at all? I was tempred to get a friend to weld the two shafts together...