Case

image.jpg Botom of case. I'm not sure what went down there. But it made a hole.
 
Look in the for sale section, I know member Fast6hand was parting out a blaster he might have one
 
I guess you do need 2. Most of the time its the sprocket side. They can be welded and than machined/lapped .. Im pretty sure Oconnor Does case welding but im not 1000% positive. It's worth a call to see.. 860-230-5003