Aem Meth nozzle check valve question

[Grescht]

I installed the bigger nozzle today in my aem system. my question is, when installing the check valve into the new nozzle, is there anything that goes between the bronze piece at the end of the spring and the actual nozzle? or should you be able to clearly see the bronze through the nozzle hole. Reason I'm asking is because I fixed a boost leak and went for a drive with the new nozzle and my WOT AFRS were a point and a half lean. I'm trying to figure out if either my nozzle isn't working right or I just had a big leak that was making me run that rich. just wanna know because I don't have the old nozzle on me and I can't look inside of it.