purchased 9010, missing parts?

[sinful]

Hello, I have a pretty simple question and I'm sure it's an easy solution for someone w/ knowledge of this skimmer. I purchased a used 9010 and it was missing the blue air regulator screw. I ordered replacement screw and it does not fit the skimmer. Is there another piece that I'm missing or are their different size screws?

 

[sinful]

found my answer, there are different size screws! My mistake.

 

[rvitko]

Yes, up until about January 2007 the screw was 6mm 3130.160, we then changed to the larger 8mm 9010.360.