Well, that's a bit embarrasing but I've just learned to use Catia and I don't know how to change the size of a Product. I downloaded yesterday a shock absorber I want to use in the design of an UAV's landing gear but I couldn't manage to modify the size in order to make the final assembly. As you can see I'm a complete rookie, so please be smooth =) thank you very much
I'm not familiar with Catia, but in Solidworks there is a possibility to scale parts.
Had a quick looksee in Google and Yes, there is a scale option in Catia....
So just hit in your question @google and everything shall be revealed....