Why does everyone use the Dicor self leveling lap sealant? After only a year, the white sealant turns into this ugly almost yellowish-brown mess with cracks. The sealant that they used from the factory on my 2020 Flagstaff Micro lite is still white with no cracking. In fact, I can scrub the factory sealant when cleaning my roof and it comes clean. I want to use the same stuff that they used at the factory and its not Dicor. I think i'm going to try just white rubber caulk the next time because I think that is what the factory used. Has anyone tried using caulk?