Hey guys I need a little help with a wood stove I picked up over the summer. It's a englander 24 ic. Not the newer model 24 icd. I am in stalling it in my living room and going to tie it in to my chemney that has a 6 inch collar in it. The stove has a 8 inch opening for venting and my question is can I reduce it at the stove or at the collar going threw the chimney? I am not interested in redoing the collar. Please tell me what I can do.