I"ve owned an Englander 25 PDVC for 3 years and I love it...I noticed that it wasnt blowing on high setting like it used to so after searching this site i quickly discovered that my fan had gotten clogged with dog hair and dust i removed the fan and cleaned now its like new and blows great...but here is my question...after reinstalling i was trying to figure a way to put a filter over it to make cleaning easier when i felt air blowing out the bottom of the stove below the fan...upon inspection i found that the weld doesnt go all the way to the corner thus letting air escape from the box where the fan mounts...is this normal??? i wanted to seal it up but dont want to do anything that will screw up my stove...also any ideas on a filter system i thought about putting a screen over the fan opening to make cleaning easier without having to remove the fan...THANX