I'm currently doing some tests in backing up XFiles Season 1 R1 dvds. Followed the new Big 3 guide using the latest DoItFast4U, BatchCCE4U, Scenaid, CCE 2.66. Everything seems to be working, and video quality looks good. However, I notice in some scenes that the background color seems to be shifting from a light color to a somewhat darker color & back again to a lighter color. I've read that episodic dvds are interlaced. However, DIF4U tags them as progressive, with the occasional I-BFF tag for 1 or 2 episodes. If I uncheck Progressive in BatchCCE4U before encoding, will that fix the color shift problem ? Also, do I need to check Alternate Scan ? Thanks in advance.