I recently purchased a T480s and after taking it apart to do a badly-needed clean, half the screws inside are missing, e.g. no screw for SSD, only 1 for the battery, various ones for the connections etc.

If I buy a specific set for the T480s, they're like £35, so I'm thinking of buying a large generic set from ali - what sizes do I need though?

M2 x 3, M2 x 4? for both the normal and the 'fat head' shorter ones?

Are there any others?

Also, bonus question, the previous owner did something funky with the screen and the sides don't seem to be pushed in equally all the way around - can I simply just apply force and push the screen into its housing so the sides align up equally, or do I need to actually take it apart?