I Think that Sean is talking about this thread:

http://www.rcuniverse.com/forum/m_12...tm.htm#1203416

I also recently made a P-80 mount for my roo: used the top side of the original factory mount and a strip of 2.5 mm aluminum. rounded it over a pvc pipe and used some washers between them to get the right grip.

Best regards, Enrique