When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
If it's just the stud to stud crack you can just leave those alone. If you have cracks in the valves those will have to be drilled, screw it shut and grind it smooth. A professional should do that.