"Supply pump" access in 300TE

[philippe]

Hi everyone,
I have a 1990 300TE 4MATIC and I'm trying to access the "supply pump"
that takes care of the central locking system. I'm almost there but in order to
remove the carpet, I have to take care of the plastic covers (numbered 1
and 2 in the enclosed picture) without breaking anything.
Do I only have to pull up harder or is there a trick to remove them easily?
Thanks for any advice...
Philippe