Broken small plastic pins on DDR3 RAM holder?

Hello,

I've just upgraded RAM on my Macbook Pro mid 2012 model. I followed the guide on this site.

One memory module was harder to lock inside so I applied little more pressure to lock on.

After that I removed the module and saw some small black plastic shavings on the bottom plate where memory sits.

I don't have other MBP to compare with so could anyone look at this photos and verify that I didn't broke that small plastic pins on the both sides of RAM holder? These pins holds memory module inside a prevent them from jumping out.

To me my pins looks too small and I'm afraid I broke them. They look shaved like half of them are missing or they're normal? I don't want that my RAM jumps out accidentally when I move my MBP or during transfer.

Here's the link where're photos: https://www.dropbox.com/sh/ml2clvaxr10ft...

Thans in advance for your answers.

~Sam.