Does your com.apple.Boot.plist look like this?

<key>Kernel Flags</key>
<string>-v arch=i686</string>
<key>Graphics Mode</key>
<string>1280x800x75</string>

Do you use the EFI Partition? or an Extra folder on your install? If so than here I believe is the order in which most bootloaders use.

1. /Volumes/EFI/Extra/Library/Preferences/SystemConfiguration/com.apple.Boot.plist
2. /Volumes/EFI/Extra/com.apple.Boot.plist - This being the preferred.
3. /Library/Preferences/SystemConfiguration/com.apple.Boot.plist

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MOBO: Z77MX-QUO-AOS CPU: Core i7 3770K GPU: MSI N760 TF 2GD5/OC Case: Modded MacPro2,1
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Interests: KDE on Apple Darwin, Keeping it real with the command line, Helping those that help themselves