I just ordered a new telescopic baton. It's brand new from the store. What I want to know because this is my first one. The thing is, it extends alright. Oh just so you know it's a 26" baton. Now the last extending bar locks perfectly to the point i have to slam it on a surface to retract it. The problem is the middle bar i mean it locks but if i shake it enough it will go weak and retract. Is this normal or is there a way to make the lock effect stronger? Or do I just need to send it back?