Okay to use Liquid Roof?

Hello Everyone,
I just joined the forum today, because I was looking for some ideas to fix some leaks in my TM.
I have just read some of the postings here about roof leaks. All my leaks seem to be coming in around the center seam on the front section. The water works it way through around the roof vents and air conditioner and then drips onto the floor. I have cocked around the roof openings and inside around the areas, but the leaks still remain. I am fearing that me getting on the roof to cock may have caused more damage.
I was looking at the product "Liquid Roof" on the Camping World website and am thinking about applying it to the whole roof. Has anyone used this product? Could it cause more damage to my TM? Does anyone have any other suggestions?

Thanks,
Kevin Masse

Dover, NH

TV 2001 Ford Winstar
TM 2004 3023