Check your shifter mounts
(I posted this as a conclusion to another thread, but it may not been seen there by as many as need it.)
While I was trying to solve an issue with my car being difficult to get into 1st gear (turned out to need an adjustment in the reverse lockout block -- thanks again Gonzo for diagnosing that!), I found out that the rubber mounts for the entire shifter box had perished.
As a result, the entire box was moving as the shifter moved. There is no easy way to know this is happening when everything's together. The box just moves with the shifter and you assume any sloppiness is just the way the crappy Renault and shift mechanism are designed.
I did not bother to replace these bushings, I just tightened down the lock nuts to get rid of the play. And I have not noticed any side effects of not having a flexible mount. The shifter is not gated, so it's free to move around if the gearbox moves on its mounts. There are no extra vibrations or noises. The shifter is just solid.
And now when I select gears, it's much more precise. Before the gears were literally in a slightly different place on almost every shift.
My car is a 98 that has lived all its life out of the sun and only has 27K gentle miles. So if they perished on this car, chances are yours are a goner too.
It's a bit of a pain pulling everything out to get to these bolts, but the effort is worth it.