I have an iMac 21.5 OS 10.7.5 I recently installed PS CS6 When I print there is a red caste and loss of grey details I use photoshop to manage colors Canon i9900 PR1 printer profile with Canon photo paper plus glossy, Normal Printing Relative colorimetric, checked black point compensation. The driver grays out the printer color controls. The document profile is Adobe RGB1998. The screen was calibrated with Spyder 3 express. Should I be using a different profile???