Hi richardreyn7,
Welcome to the Heartland Owners Forum and someday to the family of Heartland Owners. We have a great bunch of folks here with lots of information and all willing to share their knowledge when needed.
Since I don't know what kind of shower you have and it's in a coachman it would be hard to answer your question. Some doors are adjustable slightly and some are not. But maybe some of our other members that have converted to Heartland might be able to help you.
Enjoy the forum and join our Heartland family.
Jim M