I e-mailed Kryponite to register my key number for my disc and cable locks. I also mentioned that both had tubular keys. The rep from Kryptonite e-mailed me back and told me that my locks were subsceptible to tampering and they will exchange them for the new locks with flat keys. The rep sent me a prepaid sticker for UPS and all I had to do was box them up. Tonight I received the new locks in the mail!!