Replying to How can I shorten my ski poles?

So I have two pairs, and both are to big. Actually, they are the right size, but I want shorter polls because they are fucking annoying trying to ski around flatland and having to make huge strokes, and they don't help me balance at all. So, how would I go about shortening a pair of them? Is it something I could do at home? And I don't want to ruin the polls, both paris are newer and i'de be pissed if they got f***ed somehow.