DO NOT BREAK IT WITH A SCREWDRIVER. These are really well designed as a theft deterrent, which can be a mixed blessing.
I was able to get mine to go by squirting it with WD-40. Another forum member came up with a great idea: he used the blade of a jigsaw to apply vibrating action to the cylinder. (Apparently that’s an old locksmith’s trick).

Good luck.

Jeff Pierce

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Jeff Pierce

Current Vehicles:
'92 Mercedes 190E/2.3 (247K miles/my daily driver)
'93 Volvo 940 Turbo Wagon (263K miles/a family truckster with spunk)
'99 Kawasaki Concours
Gravely 8120
Previous Vehicles:
'85 Jeep CJ-7 w/ Fisher plow (226K miles)'93 Volvo 940 Turbo Wagon
'53 Willys-Overland Pickup
'85 Honda 750F Interceptor
'93 Nissan Quest
'89 Toyota Camry Wagon
'89 Dodge Raider
'81 Honda CB 750F Super Sport
'88 Toyota Celica
'95 Toyota Tacoma
'74 Honda CB 550F