Need to replace retrun jet assembly...HELP Please!!!!!

Hi All...

A quick thank you for all the great shared info here. It's been very helpful to me as new pool owner.

My dilemma... I have a 25 year old in ground vinyl lined pool. I had the liner replaced a couple of years ago. all is good there. The problem now is that I have to replace one of the return jets. I have dug it out and found that the hose barb that was glued in has come apart.

I have the new assembly to install. My question is...how do I remove the liner from the locking channel enough to that I can install the jet behind the liner? I don't really want to cut the liner open to install the jet, then patch and fit the liner around the new jet.

Thoughts????

I have a picture to attach, but don't know how to do it here.

Thanks.

Donnie.