Thanks for the reply.
I can drill out the TC flange which would then accept the CV end of the driveshaft but, the non-CV end of the shaft has the smaller holes while the flange on the high pinion 3rd has 2 different bolt patterns each able to accept the 10mm bolt.

Perhaps I need to have the guy install a different end on the shaft that has the larger holes?  I could drill them out also but it is smaller... I don't want to make it weaker than it appears to be.

Not sure what to do at this point.