I've been using a DE for about a year now, and since I've got my prep and technique down I've enjoyed great shaves.....until today

I just received my Gillette Superspeed (1958 d-3). I made sure there were no loose parts, no damage, and the blade fits perfectly/not sticking out on one side more than the other.
The first thing that i noticed was that its a little more aggressive than what I normally used, so I went slow and kept my angle as perfect as I could and used no pressure. . Well, after the first pass I could feel that burning/stinging sensation. Second pass I paid even more attention to my angle and was really careful. I cut the shave short and didn't do my normal XTG pass, and screw any ATG this time!
Well, long story short, my face it red, stings, and burns. I don't get it.
Has anybody had this experience with the superspeed? Trust me, my angle was right, and i used absolutely no pressure.