Good afternoon, This weekend i cleaned out all the old cracked factory seam sealer from the EXTERIOR drip rail area, i would like to use a quality product like Lord Fusor. I started looking at all the products they offer and quickly realized that i dont want to use/buy the wrong product, im thinking about the 800DTM single stage tube, but not sure if thats what i should use, i have already epoxied the drip rail area, also is there a cheaper alternative to the Lord Fusor guns, kinda pricey for a one time use. Can someone thats done this before guide me in the right direction? thanks as always for your help, its appreciated...rich