How to patch this part

Our CMM operator scanned this part and created a surface. I am supposed to use it to nest this pipe in a block to the true shape of the part which is different than the cad file of the part. Both sides are missing and jagged and our operator claims he cannot give me a full scan without moving the part and that would screw up his coordinate system. How do I patch these sides? I am fairly new to surfaces and could use a little advice. Thanks in advance.SolidworksSurfacing