Carb rebuild HELP!

So apparently that checkball and seal ring do go in the economizer/metering block but there should also be a spring in that port, which is missing. Mikes Carb does not have as he said that the block is usually never taken apart. As the ring and ball just fell out when I pulled the economizer body out I’m guessing a
Previous rebuild left it out. I will try and see if a carb spring set from local parts store has one that will fit. Some before and after cleaning photos.....

View attachment 1715278752

View attachment 1715278753
Mike’s Carbs came through as usual. The power valve spring part 66-123 will work.