I have the gas version of that model. It had a lot of leaks, especially in the windows. If proper maintenance is done there would be no problem. Some of drains in the window channels were plugged with crud. Unless the roof is well maintained, a coach this old may have some serious water intrusion issues. I am going to have to install new front and rear stabilizer bushings this fall, as they are nearly gone. This is not a high quality coach, so unless maintained maticuously, there will be problems.
Hope this helps.
1994 Coachmen Catalina/ Ford F53