Hi all - Coachman Class C Leprechaun 260DS - any winter tips others have used to eliminate the outside cold air draft coming in under the slide on both sides of the bed when the slide is out....I have tried using 3/4" foam backer rod outside under the slide across the length of the roller gap but am unable to keep the backer rod temporarily in place, and hesitate to secure it with tape that must be removed again when we travel each day....thank you!