I took a break from SF2 for about a year. Before I took this break, I struggled flying the F-4. I read a lot and practiced a lot and still always ended up wallowing like a pig at 220Kts. I couldn't maneuver for a sidewinder shot on a mig-17 for nuthin'. I could only get them head on with a sparrow from range. Some slight FM tweaks was the only way I could handle the F-4. 
  
But after a year's break and a new computer, I installed the SF2 series with fresh new May2012 installers. Suddenly, me and the F-4 are buddies. I'm on the Mig-17s like white on rice, and the Mig-21s haven't got a chance. No FM tweaks necessary. 
  
I'm happy about it for sure, but I'm wondering what changed? Did the FMs get reworked a bit or did my brain do some ACM rewrites during my hiatus?