Have not been on here in a while but we have been busy behind the scenes. The Beast as we lovingly call our 88 allegro is coming along nicely. We have replaced all the roof vents(sewer as well as fresh air) stripped the seam on the front and rear caps and applied eternabond to them all that is left is coating the roof.We also replaced both roof airs. We are serious about fixing the old gal up.So thus a question,The rubbers around all the windows are deteriorating. Is there a fix to this? we have no leaks just black mess when we try to clean. I have a great camping story to share soon so watch for it.Thank you and God bless!