Perley - Yes, the drill tries to run away; you need a strong grip on it. Once you get the hang of it, though, it's pretty easy. If you make a mistake, just go over it again.

FMX- Funny you should ask... As it happens, the guy who gave me my first ever ride in a hotrod (in 1960 or '61) has a louver press. I have a call in to a mutual friend to see if he will punch my side panels...