I have a 1990 lj78 5spd manual and it randomly jumps out of 1st gear, I've changed the white bush on the bottom of the lever but what I need to know is do they have a bush that the ball on the lever sits in? All mine has under the ball is a flat rubber washer and there is not a lot of tension on the cup that holds the lever in, not sure if this makes sense at all but any help would be greatly appreciated- I see this bush is available and I'm wondering if that's what is missing? Cheers Mark