I recently purchased a new Roubaix that comes with the comp 12 degree multi stem. The stem is horizontal now but I'm trying to get a bit more stretched out on it.

I've been trying to understand this guide from specialized (http://service.specialized.com/collateral/ownersguide/new/assets/pdf/Stem---Carbon-Road-Stem-Instruction-Guide.pdf)where apparently you can add or remove shims to adjust the stem angle. My stem didn't come with any additional shims.

I'm a bit confused and need a laymans explanation about whether I can extend this stem by removing shims or perhaps flip it to extend reach (its horizontal now)

Thanks for the help!