Never mind its a delta 600. But.. when I opened it up the springs had little plastic sleaves in them. Delta help line said take them out. Is this correct?
Valley springs have those plastic sleeves. Are you sure you don't have Valley? With Delta the spring would push the rubber seats against a ball, If Valley they push against a flat surface. You need to get the right one.
it could very well be a Valley. I took the white plastic inserts out and put it back together without them. Its not leaking and the flow is very good since I flushed the lines.
What's the risk of not having the sleeves?
Premature failure and leaking. They did NOT put the sleeves in there because they had them left over from something else and wanted to get rid of them.