As mentioned in my other post, I have a cracked crankcase where a broken chain smacked it. I let a welder at the bike, who first messed it up, but was then able to weld it up fairly well. After welding, we coated the entire area in this sky-blue epoxy which becomes almost like glass when dry. I was just wondering wether anyone has had any experience with this sort of substance. It's not leaking now, but can I trust it?