I was trying to vaccum the dust inside the ports of my speakers (Kef Q35.2s) and for a moment I was distracted by the ringing phone and for a brief moment the hose got in totally, properly inside the port... I was curious if it moved the stuffing inside, so I looked through the port with a torch and saw that the stuffing was blocking half of the port inside the box, the other one is almost totally covered. (That one's driver was removed and tweeter was replaced though, so I can't check if it's normal). I remember reading that the ports shouldn't be blocked before stuffing my sub with polyfil. Is it normal the ports of my speakers are half blocked? I hope it wasn't the vacuum which caused it. I checked the black polyfil like stuffing with a stick touching it gently and it doesn't look like it is loose enough to move by vacuum but I can't be sure. Any opinions will be appreciated.