Hoping for a simple yes or no and how one might go about adding a port to the Ampeg PF 210HE sealed cab since I already know about the theories and math, and so on. Would you attempt to do this DIY port addition and would "any sort of port" help the bottom end on these cabs? Or, is the benefit so small it is not worth doing this. I do not have the cabinets here yet to look inside and see if it is possible. And a side note, I am also looking for two Ampeg covers that fit the PF-210HE cabs.