It’s been an issue since the g4 was released. I “prepare” the seat using fine valve paste and a bamboo skewer.
My method is to use the larger size skewers and cut the first 3-4mm off the taper and then apply the valve paste to the next 5-6mm section of the taper on the skewer. I just dip the end in and get a fine layer on. Placing the skewer into the seat I rub the stick between my two hands using the same motion I use for seating valves on engines.
I’ve not had a failure with this method and employ it whenever I replace the needle or contact components in there. The paste impregnates the taper of the skewer which deforms to the correct shape. I take special care to clean all the paste off before reassembly.
