Stihl Carburetor Parts

Does anybody know of a good source for carb rebuild kits? It's for a Stihl BG 55 handheld blower. I think the diaphragm is junk on the little Zama carb (I need to make sure what model it is), but I've been unable to find anything for a rebuild kit. Amazon has some Chinese carbs, but I'd rather rebuild the original. I've found one rebuild kit, which is on Amazon, but I'm not sure if it's right. Trying to decipher all of their info is difficult at times.
Blow off the cheap ching-ching parts and do yourself a favor and purhase your parts from a Stihl dealer. Run good parts and good fuel and you will not have any problems.
It's a no brainer.