You might try this forum. MasterShop was a knock off of,the Shop Smith MK V, I am told, and some parts may be adaptable. Anyway, these guys may know.
http://www.shopsmith.com/ss_forum/index.php
I had a Shop Smith many years ago. It did few things well for me, but I,was making and repairing furniture at the time. The general problem with the Shop Smith is that the table mount flexes when used as a drill press, and is so small as to be problematic when using as a table saw, JMHO. Now a Hammer is a multi tool!