Hot water compartment loose

Hello we have a 2007 Cheetah Safari. On the exterior of the motorhome we noticed that the hot water compartment was sticking out approximately 1 inch on one side. We can push it back in but it returns. Looking in the compartment we cannot see any bolts and when we crawl under the motorhome it is solid and we also can not see any bolts. Any suggestions. We have made arrangements to get it into a repair shop but not for a couple weeks any support would be wonderful. Thank you.