Yeah, all the bearings where replaced with the correct size. Each bearing was checked, then replaced like for like during the rebuild.

So I've made a bit of progress, I made several adjustments to the gear linkage to try and sort out the sticky reverse which worked.
3rd gear noise is if you leave your hand on the gearstick or push it too far forward whilst changing so something is catching. Same with second.

So I shall pull the gearbox apart, again, and see whats catching where as I should have fresh marks where parts are catching.