Hi Just got back my Rv from getting a radiator crack brazed.... Got off real cheap, they removed it from RV and put is back... Just like new. Anyhow that is not what I am worried about. There is a large crack around half of the end drain. I am taking it in this friday to get this fixed. What I am worried about is the gentlemen are going to "bondo?" the crack around the lever. Has anyone had or heard of this being done and does it hold up?