Sometime last year a group on kickstarter came out with direct wired repair they call Blinking Light Win, https://www.arcadeworks.net/blw
It replaces the game slot and cart bed on a front loading NES. I replaced mine last week with one. I haven't had any issues with any cart yet. It is 3x's the cost of just replacing with a standard replacement connector.
It can be a little tight in getting a cart out of the game. It feels more like a toploader with the benefit of RCA game hook up.
I called it direct wired because the cart is engaged when you put it in the slot. You no longer press it down to engage.
If I experience any problems with it I will post back here.