It's time to replace the 2 pipe vent covers on my 2012 17B. I am willing to try it myself, but I need to know how to remove the original sealant from ETI and what to replace it with. ETI applied the same sealant to my MaxxFan cover, Dometic fridge cover, etc. On the MaxxFan, for example, there are "curl on top" drops of sealant every inch around the base. Does anyone know what that material is and how to acquire it? Or, if there is a newer/better product I should use?