Hey im kinda have the same problem as you but my cutout is a little too big. I think I have massive air leaks in the front cause my subs are a little bit smaller than the cutout. So can I just put some silicon around the cutout to make it smaller, or how would I use the weather stripping. I think which ever gets harder, and can stick to the cutout better would work for me. So what should I get? The circle is probably off by less than 1/2 of an inch. Sorry if I'm thread jacking but my problem is so silimar.