u/Wide-Eggplant-4265

Do they make a space that would let me use the red blades on my mower? Black blade is what size is on the mower now. Found the red ones someone was throwing away and thought I could find a spacer I'd have a free set of blades I could use.

Number 4, 5, and 6 are not working. 4 will sometimes work but always end up having to turn the butterfly valve on top to get the zone to shut off. I know where the number 4 zone is out in the field. 5 and 6 have never run so I don't know where they go. Can someone please tell me is anything I can do to try and fix before I start taking this apart to see what's going on with them.