Welcome to irv2 Gobucks.
As your sign-in indicates roofs can cost money to repair.
Here is a thread
that may help control some minor roof problems now but with age of roof a complete job may be needed.
Rubber roofs of that era will dry out and crumble and will be hard to hold together.
At top of forums there is a search engine that will give many threads about your problem.
Enjoy the forums and come join us on the Newmar forum.