After living with a noisy gearbox for years, this is perhaps the best fix on here.
My box sounded bad and I mean bad in every gear (1-4 worst) I thought it was unrepairable. Was even coasting car out of gear down hills so I didn't have to listen to the noise lol!!
For the sake of £10 and a bit of persistence, my gearbox now sounds and feels 100% better....no noise. Couldn't believe it!!
To think a couple of years ago a local VW specialist quoted me £100's to get box fixed, which I was considering. Glad I didn't.