Jet Dry Dispenser Leak

My Whirlpool jet dry (liquid) dispenser is leaking during washer use. I have adjusted the flow control setting lower, but after a wash/dry cycle there still is a heavy sticky liquid trail running down the door panel on the inside under the dispenser. Sometimes it gets on the silverware and they have to be re-cleaned. Is it just that I need a new dispenser fill cap ? Don’t see this item on the replacement parts list. (how does this dispenser work anyway ??)
This is a MODEL # GU2200XTSQ

It would be helpful if you posted a model number for us, thanks.