Gary,
I have a 2005 Monterey and had the same problem. Not sure about your configuration, but I was able to drill out the old rivets. I have a metal strip that is over the rubber seal. This takes some work, but is fairly easy to do. I stuck the new seal in place with double sided sticky tape and proceeded to put in the new rivets. I first placed the metal strip in place and drilled through the rubber seal. Then I pop riveted the thing in place. If you need the special size rivets let me know. I hade to buy a box of 100 so I have plenty and will send you what you need. This will make a big difference in the amount of air coming in. The rubber can be purchased at almost any RV parts supply. Let me know if you have any questions.
Dennis