I had that issue on my Vmax 700. Welding shop said they couldn't do it when I described what had to be welded. So I tried a marine type JB weld. Suppose to hold up under pressure and different chemicals, also supposed to set up even on a wet surface. I had the sled on it's side and used a propane torch to heat/dry the surface by the hole. I mixed up this JB weld stuff and jammed it into the hole and around the surrounding area. So far it has held up for 3 years and over 1500 miles, I'm not recommending to fix it this way, just the luck I had with using an epoxy type fix...