Brownell's instructions, (four pages, tiny print, downloadable from their website or they'll send it free -- just call 'em with questions or orders for the printout) covers anything you'll ever want to know about parking -- including the bit about cosmoline for the green. Just get the Red cosmoline. Also, if one's a "part-time, small-time 'gunsmith,'" they'll send their (over an inch thick) catalogue and wave the normal $5 charge! Great company -- all the guy's over there at the pass just inside Pakistan order their hand tools there!