Recently changed by clutch, pressure plate.

Recently changed by clutch, pressure plate flywheel etc.

After a month, I began to notice that when I am pulling off in first gear, the car is vibrating ( shaking extremely until l change to second gear).

I took it back to the mechanic(Meineke who installed the clutch etc.) And he said that the car is an older vehicle and I am not giving enough gas when taking off.

He drove the car to show me. I still detected a vibration (although not severe as mines) on take off.

I am not convinced that that is the reason and I find myself changing very quickly to second gear to avoid the vibration. I am worried that if I continue to drive like this, I might damage the gearbox. Also, the job is under warranty and I won't want it to run out and I still have the problem.

I never had this problem before I changed the clutch etc.

Your input will be appreciated.