I am using my 3 Sierra-1's with banana plugs and the plugs insert all of the way into my sierra's speaker terminals. I just tried using them with my cbm-170's and they do not insert all of the way into the speaker terminal. Please see the attached image. The sound seems fine, and I like them for the convenience but I am a bit concerned about them not going all of the way into the 170's. What do you think?