Hi Cris, welcome to iRV2.com. We are glad to have you join us here and look forward to reading of your adventures and experiences. Not being able to see how bad the roof is makes it nearly impossible to determine as to what extent you need to take on the roof. There are several options you could take. If the roof is structurally sound then finding and repairing the leaking area would suffice. If the sturcture is compromised then more drastic measures are needed. THe Hi-Lo trailer have a hydralic ram that raises the roof and a safety bar that falls into place to hold the roof up in the event a hose were to break. There should be a steel cable near the switch to raise & lower the roof. Raise the roof and then pull and hold the cable while pushing the "lower" side of the button. The motor is not needed to lower. A solenoid is on the return hydraulic line is energized and it opens a valve to bleed off the fluid and the hydraulic ram retracts allowing the roof to lower. There may or may not be a "master" switch that must be turned on if you do not have any lights that work or the motor will not raise the unit. IF you need to call Hi-Lo there number is 800-321-6402. Good luck and enjoy!
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7