I replaced my NES connector (with a Kung-Fu gripper/MCM one) about a year and a half ago and started getting yellow screens again yesterday. So, I took it out to clean it. It was dirtier than I imagined but got it shiny and awesome again.
Well, it was working like an original ("ZIF") connector but has now gone back to Kung-Fu. I think the dust and grime was lubricating the connection with the carts. Just thought it was an interesting observation; maybe when the carts start sliding in real easy it's time to clean the ol' Kung-Fu grip.
-------------------------
