I have just installed a new copy of XP on my replacement PC and reinstalled all of my GP4 stuff, which includes the original game, the updates, ZAZ tools, GPxPatch Team Editor v3.5, and most of the aftermarket tracks created by the great contributors on here. I'm having a very strange problem in that I am now 2-3 seconds per lap off the pace on almost every track that I run on, most of the difference on straight away power and entering the turns. I have tried all kinds of various tweaking of the magic data and also messed with the performance files thru Team Editor (even obscene settings of my driver being over 20% higher than any other). I have tried every setting in GPxPatch, Old Behavior, Team Dependent Power, Power and Grip, and some different performance files. Nothing seems to change anything. It is as though something in my reinstall has blocked and overridden any and all outside edits. Prior to the reinstall, I had the game setup up giving my self an approx 5-6% performance boost thru Team Editor and had tweaked my favorite tracks' magic data where I could win if I ran a near perfect race, i.e. correct line and no mistakes. Any help is appreciated.