Searching on the MAC – I opened the documents file which has all he various folders for the issues. I searched for pdf which then lists all the actual files out of the folder structure. Then I dragged all these files and dropped them into iBooks (free app for MAC). So now in iBooks, I can search, say for Torsion and it list the two articles. Maybe 12V and all the 6 to 12 volts articles comes up etc.
Does not go into the actual PDF to search but as an overview it seems to be fine. Just found a load that would have been (still are) very useful for my restoration.
Cheers
Ian