Okay then, I will take another project to build then. Thanks for all your support everyone, i honestly didn't expect that kind of help I'm really impressed about this forum and will continue my activity here further on. As for this project, I guess someone tried to do this and failed, or had it working by luck, as you said. Anyway, thanks again for all your kindness! :3
I looked in Google Images for Trimmer Resistors and found yours. "102" is 1000 ohms and "101" is 100 ohms.
You should show this to the "guy at the component store" and also show him images of real trimmer capacitors.