i think the shop bought every thing in the Wilkinson catologe.!
they initially used the rubber insert trunion, But I insisted they use a sperical bearing.
It should have been perfect, but I think the forceful shifting during testing loosen things up. the free play requires shifter sliding along side of the upholtered frame, ie where the gate was machined to. with 2/3 is pretty close to center, (some times requires a little side to side wiggle)
correcting is on my wish list for latter. sort of imposible to watch linkage to find loose section by your self.