Thanks for the info blakeusa. In case someone is interested here is a photo after I used pool putty to plug the leak. I'm not worried that is only a temporary fix as my marcite is 19 years old and I'm currently getting bids on resurfacing.
Did you get a solution? I also have a leak around one of my pool return jets. I did the dye test today and it's clearly getting sucked in from the gap. I plan to buy pool putty at the store tomorrow when it opens after the holiday.