Several days ago i took my glock g19 hop up apart. After putting it back together, everything seems to fit fine. The only problem is, when i ajust the hop up (turnig the teethed part of the hop up) it goes much too smoothly. This is because part 15 and 11 are not sitting tightly against each other. Any reasons why this is happening and how i can change it? Its not a huge problem, and i dont think it affects the accuracy, but i would like it fixed.
The square indicates where the two parts are not making proper, tight contact.