...You can always try Pony Carburetors. The only problem there is that they have a $50 minumum.
They really aren't springs, they are float retainers. At least on my 4100 the only thing they do (and it is very necessary) is keep the float tab centered over the needle valve. Without it/them, the float would slid back and forth across it's pivot shaft and not put square pressure on the needle.
I suppose you could do the same thing with small stainless steel circlips that you could get at the local hardware store. The shaft has groove in it to accept the spring end and I am sure you could find circlips to fit those grooves.
I am really surprised that no one else has addressed your post. This site is really dead lately.
Scoring disabled. You must be logged in to score posts.
HAVE A NICE DAY!!!!