after tearing my build down and taking thorough inspection i've noticed that the mount for my down tube has a huge gap to it. like 7-8mm kinda gap. after reading numerous posts on how important it is to have a good flush mount i can safely blame this problem for breaking my ''stupid threaded rods''. now my question is can i fill the gap to create a nice flush mount and what kind of material will work well. i have some JBweld and a dremmel tool and was thinking about filling the mount then shaping to a proper fit but being the front mount i don't want to ruin anything. so before i make a mistake what do you all think.