On a Bay there are a number of things.
Check the rubber coupling at the rear of the shift rod first.
Then the solid coupling mid-way on the rod.
Then there is a plastic bush at the very front of the rod
(but I wouldn't expect that to fail suddenly).
Of course, make sure the shift lever is bolted solidly to the floor.
The most devilish failure I saw on a Bay was a shift rod which had
actually rusted away. Little by little the rod became so weak that
it was twisting and selecting a gear was guesswork.
Check the rubber coupling at the rear of the shift rod first.
Then the solid coupling mid-way on the rod.
Then there is a plastic bush at the very front of the rod
(but I wouldn't expect that to fail suddenly).
Of course, make sure the shift lever is bolted solidly to the floor.
The most devilish failure I saw on a Bay was a shift rod which had
actually rusted away. Little by little the rod became so weak that
it was twisting and selecting a gear was guesswork.