I put a copy of the information I have compiled about Motoplat testing in the files section of the Penton Restoration and Tech Yahoo group. Here is a link to the group.
http://groups.yahoo.com/group/PentonRestorationandTechGroup
Here is a link to the article.
http://groups.yahoo.com/group/PentonRestorationandTechGroup/files/Motoplat%20testing%2C%20revised%20
I hope it helps.
Regards, Mark