Thanks for the advice. I think I'll buy the plastic thingie, since I will need it either way, and then see if the motor is dead. It worked perfectly until it stopped one day.
I am planning to follow Thomaspin's advice on his website and use the duct tape, sleves and gloves to protect my hands and arms. I was badly mauled by a Buick once before when replacing that silly rear vent on an 82 Regal. It is hard to believe, but the rear windows on all GM cars for many of the "Roger Smith Years" did not roll down., except for the Cadillacs.
I hope poprivit gun can fit in there. I am not sure of how to peen, as I have never peened before.
Once more, many thanks for your help.
Semibodacious Transmogrifications a Specialty
1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)
"Time flies like and arrow, yet fruit flies like a banana"