My problem is the opposite; my faucet head sprays in conjunction with the single stream, but won't switch back to just a single stream. Is this something I can fix myself?

I would suggest to call Moen at 800-289-6636 they will tell you how to fix it, if you will need parts they will send it to you for free, or wait what the experts on this website suggest, Thanks.

John

My problem is the opposite
What does that mean?

Are you saying you have a Moen kitchen faucet with a side spray and that the spout does not shut off when you use the spray?
Or are you saying that the spray does stop when you let go of the lever?

Or what?

This sounds like a stuck diverter. Do you wish to open up the faucet and do the repair yourself? If so, we can walk you through the repair. Back to you, Tom