I have these two problems also. solved both.
the morning grr grr from the gearbox is due to low level of gear oil mostly. but the problem is that no one knows how to check the level of the gear oil. so if one knows how much to put in, one has to replace the oil. my problem was not solved by replacing the oil but later putting 0.5 liter more oil solved the issue
about the second problem, the first gear jerks? i had to replace the pressure plate coz its finger springs gets hard if you punish the clutch and it gets hot. also i had two broken foundations which were replaced. but due to local made foundations now i get resonant vibrations near 800 to 900 rpm in the dashboard and steering column. hard to find original ones.
i will suggest to first checkthe foundations then go for pressure plate.