Hi,
With the price point of these I'm assuming they just don't readily stock replacement parts. If it was something that was a couple hundred dollars they most likely would, but with it only being $45 total cost, they most likely do not see a big need for replacement parts of the product, as is the same with most other companies in this industry with items around the same price point.
I will wait to see what I get in here in a few days and we'll go from there. I know for sure that the little blue nut is coming, but not 100% sure if they are shipping me any of the barbs or not.
Thanks,
Jeremy